updated rubocop_shopify_style_guide and related files

[kunmi02]

Added new gems rubocop-rails, rubocop-performanc and rubocop rspec on the gem file. I also removed some old rubocop command in the rubocop shopify style guide and added new ones to it. Also modifiied the rubocop.yml file and the rubocop_todo.yml file
Fixes #10868 and #8646

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[gitpod-io]

[github-actions]

This pull request generated screenshots of many common pages in the running app. You should be able to download and view them here:
https://github.com/publiclab/plots2/suites/5867897391/artifacts/197934836

[github-actions]

This pull request generated screenshots of many common pages in the running app. You should be able to download and view them here:
https://github.com/publiclab/plots2/suites/5868221354/artifacts/197952319

[kunmi02]

@jywarren How can I run codeclimate on my local system?
cc @TildaDares

[github-actions]

This pull request generated screenshots of many common pages in the running app. You should be able to download and view them here:
https://github.com/publiclab/plots2/suites/5868434999/artifacts/197963235

[TildaDares]

This looks really good @kunmi02. I was able to run rubocop in my local env. Why do we need these additional gems? Also, I don't think we need the rubocop-rspec gem since we don't use RSpec as our test suite.

[kunmi02]

Most of the outdated commands on the rubocop file are now wrapped in the gems I added. For the rubocop-rspec, I have removed it from the gemfile.

[qlty-cloud-legacy]

Code Climate has analyzed commit ed4d569 and detected 45 issues on this pull request.

Here's the issue category breakdown:

Category	Count
Style	45

View more on Code Climate.

[github-actions]

This pull request generated screenshots of many common pages in the running app. You should be able to download and view them here:
https://github.com/publiclab/plots2/suites/5920227040/artifacts/202277007

[kunmi02]

@TildaDares Please review again

[TildaDares]

LGTM!! Thanks @kunmi02.

[jywarren]

Looks great. Thank you very much, and thanks @TildaDares for the close look!