Support homeId in me response

[lin-hongkuan]

Some Tado accounts now return a homeId field from the me endpoint instead of a homes array. In that case device activation fails while _get_id indexes response["homes"], which blocks Home Assistant's Tado config flow.

This keeps the existing homes[0].id path and adds a homeId fallback before raising a clear TadoException for unexpected responses.

Related Home Assistant issue: home-assistant/core#165689

Validation:

• python -m pytest tests\test_http.py -q
• python -m pytest -q
• python -m ruff check PyTado\http.py --line-length=100
• python -m flake8 PyTado\http.py --max-line-length=100
• python -m black --check PyTado\http.py tests\test_http.py
• python -m bandit -c pyproject.toml PyTado\http.py

Note: python -m mypy PyTado tests still reports existing repository-wide typing issues, including missing requests stubs and unannotated test functions; the new code path did not add errors in PyTado/http.py.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.11%. Comparing base (889900e) to head (fe87e93).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
PyTado/http.py	66.66%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #331      +/-   ##
==========================================
- Coverage   76.16%   76.11%   -0.05%     
==========================================
  Files          37       37              
  Lines        2207     2211       +4     
  Branches      134      136       +2     
==========================================
+ Hits         1681     1683       +2     
- Misses        485      486       +1     
- Partials       41       42       +1     

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