Loads HassModel.Integration the proper way

[helto4real]

Breaking change

Proposed change

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-commenter]

Codecov Report

Merging #646 (d3be62b) into dev (61bcf95) will increase coverage by 0.16%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev     #646      +/-   ##
==========================================
+ Coverage   80.39%   80.55%   +0.16%     
==========================================
  Files         117      117              
  Lines        3004     3004              
  Branches      321      321              
==========================================
+ Hits         2415     2420       +5     
+ Misses        455      451       -4     
+ Partials      134      133       -1     

Flag	Coverage Δ
unittests	80.55% <ø> (+0.16%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...mon.HassClient/Internal/HomeAssistantConnection.cs	88.57% <0.00%> (+1.90%)	⬆️
...mon.HassClient/Internal/Net/WebSocketClientImpl.cs	69.44% <0.00%> (+8.33%)	⬆️

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