Testing

[Willmish]

• [x] Look into pytest for PID system tests (and possibly other subsystems, which dont require RPi libraries) @wheatwolftianchi
• [ ] Look into dockerizing a raspbian image and adding more tests to run there (we can then have rpi specific libraries, but may be an overkill) @Willmish @wheatwolftianchi
• [ ] Check if u can do tests on azure resources: https://docs.microsoft.com/en-us/azure/devops/test/create-test-cases?view=azure-devops https://docs.microsoft.com/en-us/azure/architecture/framework/devops/release-engineering-testing
• [x] Writing tests for GUI/check how to test it (dekstop app) @angela24680403