Use testcontainers for integration tests

[Rick-van-Dam]

Breaking change

This will break the existing integration build.

Proposed change

Use the testcontaiers library to automatically launch a homeassistant docker container in order to run integration tests. Except for having docker installed the user does not have to setup anything manually.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the [development checklist][dev-checklist]
• The code compiles without warnings (code quality chek)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.05 ⚠️

Comparison is base (d2979f6) 80.77% compared to head (34e995f) 80.72%.

❗ Current head 34e995f differs from pull request most recent head a34bf95. Consider uploading reports for the commit a34bf95 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #893      +/-   ##
==========================================
- Coverage   80.77%   80.72%   -0.05%     
==========================================
  Files         171      171              
  Lines        4281     4281              
  Branches      430      430              
==========================================
- Hits         3458     3456       -2     
- Misses        647      648       +1     
- Partials      176      177       +1     

Flag	Coverage Δ
unittests	80.72% <ø> (-0.05%)	⬇️

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see 1 file with indirect coverage changes

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[helto4real]

I know you spent a lot of time getting this to work but the end-result seem really simple. We can build from this, adding more tests etc. Great job. Will approve as soon as the CI jobs are updated.

[helto4real]

Looks great! Thanks alot for this!