Adding performance tests

[helto4real]

Breaking change

Proposed change

This PR adds simple performance tests for NetDaemon. For now it is not able to run as part of the CI/CD pipeline but can be run locally. This is something that will be added in the future.

It adds a performance test server that fakes HA and a NetDaemon client project that contains apps that meassure and logs performance.

The PR also adds a small fix to HomeAssistantConnection that I found when writing the performance tests.

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)
• [x] 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

• [x] The code change is tested and works locally.
• [x] Local tests pass. Your PR cannot be merged unless tests pass
• [x] The code compiles without warnings (code quality check)
• [x] Tests have been added to verify that the new code works.

If user exposed functionality or configuration are added/changed:

• [ ] Documentation added/updated for http://netdaemon.xtz