Add GitHub Issue templates

.github/ISSUE_TEMPLATE/bug_report.yaml

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+name: Bug report
+description: Create a report and help us improve
+labels:
+  - defect
+  - to-triage
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please fill in all required fields with as many details as possible.
+        Read the [User manual](https://jmeter.apache.org/usermanual/index.html) and/or [Reference documentation](https://jmeter.apache.org/usermanual/component_reference.html)
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected behavior
+      description: |
+        Describe what you were expecting JMeter to do
+      placeholder: |
+        Here you can also attach log files, screenshots or a video
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual behavior
+      description: |
+        Describe what you observed JMeter did instead
+      placeholder: |
+        Here you can also attach log files (e.g. jmeter.log), screenshots or a video
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to reproduce the problem
+      description: |
+        - If the problem relates to a third-party plugin, consider removing them first
+      placeholder: |
+        Here you can also attach log files, screenshots or a video
+    validations:
+      required: true
+  - type: input
+    id: jmeter-version
+    attributes:
+      label: JMeter Version
+      description: |
+        What JMeter version and edition did you use?
+        Note: While you can obviously continue using older versions of JMeter, it may well be that your bug is already fixed. If you're using an older version, please also try to reproduce the bug in the latest version of JMeter before reporting it.
+      placeholder: ex. JMeter 5.5
+    validations:
+      required: true
+  - type: input
+    id: java-version
+    attributes:
+      label: Java Version
+      description: What JDK version and distribution did you use (use `java -version`)
+      placeholder: ex. openjdk version "17" 2021-09-14
+  - type: input
+    id: os-version
+    attributes:
+      label: OS Version
+      description: What operating system version and distribution did you use (use e.g. `ver` on Windows)
+      placeholder: ex. Microsoft Windows [Version 10.0.22000.856]

.github/ISSUE_TEMPLATE/config.yaml

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+blank_issues_enabled: true
+contact_links:
+  - name: JMeter users mailing list
+    url: https://jmeter.apache.org/mail2.html
+    about: Please ask questions on JMeter usage on users mailing list (note that you need to subscribe first)

.github/ISSUE_TEMPLATE/documentation.yaml

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+name: Feedback about the manual
+description: Found an issue with the documentation?
+labels:
+  - documentation
+  - to-triage
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please fill in all required fields with as many details as possible.
+  - type: input
+    id: url
+    attributes:
+      label: The documentation URL
+      placeholder: ex. https://jmeter.apache.org/usermanual/best-practices.html
+    validations:
+      required: true
+  - type: textarea
+    id: feedback
+    attributes:
+      label: Feedback
+      description: |
+        Describe what issue with the documentation you've found
+      placeholder: |
+        Here you can also attach log files, screenshots or a video
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature_request.yaml

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+name: Feature Request
+description: Suggest an idea
+labels:
+  - enhancement
+  - to-triage
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please describe the use-case you have. This will better help us understand the context in which you're looking for a new feature.
+  - type: textarea
+    id: use-case
+    attributes:
+      label: Use case
+      description: |
+        Please describe the use-case you have. This will better help us understand the context in which you're looking for a new feature.
+      placeholder: Describe the use-case here
+    validations:
+      required: true
+  - type: textarea
+    id: solution
+    attributes:
+      label: Possible solution
+      description: |
+        Please describe a possible solution you'd like to see in JMeter, ideally with example code.
+        Please note, it's not always easy to describe a good solution. Describing the use-case above is much more important to us.
+      placeholder: Describe the possible solution here.
+    validations:
+      required: false
+  - type: textarea
+    id: workarounds
+    attributes:
+      label: Possible workarounds
+      description: |
+        Please describe the possible workarounds you've implemented to work around the lacking functionality.
+      placeholder: Describe the possible workarounds here.
+    validations:
+      required: false
+  - type: input
+    id: jmeter-version
+    attributes:
+      label: JMeter Version
+      description: What JMeter version and edition did you use?
+      placeholder: ex. JMeter 5.5
+    validations:
+      required: true
+  - type: input
+    id: java-version
+    attributes:
+      label: Java Version
+      description: What JDK version and distribution did you use (use `java -version`)
+      placeholder: ex. openjdk version "17" 2021-09-14
+  - type: input
+    id: os-version
+    attributes:
+      label: OS Version
+      description: What operating system version and distribution did you use (use e.g. `ver` on Windows)
+      placeholder: ex. Microsoft Windows [Version 10.0.22000.856]

.github/ISSUE_TEMPLATE/regression.yaml

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+name: Regression
+description: Report a problem about something that used to work
+labels:
+  - regression
+  - to-triage
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please fill in all required fields with as many details as possible.
+        Read the [User manual](https://jmeter.apache.org/usermanual/index.html) and/or [Reference documentation](https://jmeter.apache.org/usermanual/component_reference.html)
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected behavior
+      description: |
+        Describe what you were expecting JMeter to do
+      placeholder: |
+        Here you can also attach log files, screenshots or a video
+  - type: textarea
+    id: actual
+    attributes:
+      label: Actual behavior
+      description: |
+        Describe what you observed JMeter did instead
+      placeholder: |
+        Here you can also attach log files (e.g. jmeter.log), screenshots or a video
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to reproduce the problem
+      description: |
+        - If the problem relates to a third-party plugin, consider removing them first
+      placeholder: |
+        Here you can also attach log files, screenshots or a video
+    validations:
+      required: true
+  - type: input
+    id: jmeter-version
+    attributes:
+      label: JMeter Version
+      description: |
+        What JMeter version and edition did you use?
+        Note: While you can obviously continue using older versions of JMeter, it may well be that your bug is already fixed. If you're using an older version, please also try to reproduce the bug in the latest version of JMeter before reporting it.
+      placeholder: ex. JMeter 5.5
+    validations:
+      required: true
+  - type: input
+    id: java-version
+    attributes:
+      label: Java Version
+      description: What JDK version and distribution did you use (use `java -version`)
+      placeholder: ex. openjdk version "17" 2021-09-14
+  - type: input
+    id: os-version
+    attributes:
+      label: OS Version
+      description: What operating system version and distribution did you use (use e.g. `ver` on Windows)
+      placeholder: ex. Microsoft Windows [Version 10.0.22000.856]