1. generate secret: openssl rand -hex 32
2. create app-settings.properties .env file in the root of the project (see example.env for reference)
3. replace self-signed certificate in app/src/main/res/raw/cert.crt
4. build:

./gradlew clean
./gradlew build

TODO:

• 1. make sure READ_CALL_LOG is granted
• 2. add input fields as secret, URL to POST data, id of the user(s) to notify
• 3. add version code and name
• 4. add default secret to app-settings.properties
• 5. notify about calls