docs(examples): add type hints to things examples

[l46983284-cpu]

Summary

Focused first slice of type hints for tutorials/examples:

• annotate examples/things.py (WSGI)
• annotate examples/things_asgi.py (ASGI)

This intentionally does not rewrite the whole docs tree — just a small, reviewable starting point.

Test plan

• python -m py_compile on both example files
• CI / docs examples still import cleanly

Refs #1820

[l46983284-cpu]

Small docs-only follow-up for the things / things_asgi examples (type hints + ruff import order).

This is my first contribution here — if GitHub is holding workflow runs for first-time contributors, please approve them when convenient. Happy to adjust if the examples style guide prefers a different annotation shape.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (6a49881) to head (47626d2).

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2685   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           64        64           
  Lines         7985      7985           
  Branches      1103      1103           
=========================================
  Hits          7985      7985           

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[l46983284-cpu]

Rebased onto current master. Product unit is unchanged: type hints on examples/things.py and examples/things_asgi.py only.

Local: python3 -m py_compile on both example files.

[vytas7]

Hello! It seems you (or your agent) removed our PR template. This is not a good idea for new contributors; you should go through the points, and check what's applicable.

I am going to close this PR, but feel free to open a new one (this time paying heed to our contribution guidelines). Thanks!