ci: add the apify-factory review workflow

[apify-factory]

Lets apify-factory review pull requests here and approve the trivial ones.

• Requesting apify-factory as a reviewer runs an AI review; when every gate passes, the review finds nothing and a second model agrees, it approves instead of commenting.
• A push that changes the code, removing the request, or going back to draft withdraws the bot's own approval.
• This repository's factory_auto_approve property is true, which is what allows approvals, and mtrunkat becomes the code owner of the workflow file.
• These paths are never auto-approved here, on top of the defaults every repository has. An agent proposed them from the repository's layout; edit the list in the workflow like any other code.

Path	Why	Files
src/apify_client/_models.py	Pydantic models auto-generated by datamodel-codegen from the Apify OpenAPI spec; must change only via the generator, never by hand.	1
src/apify_client/_typeddicts.py	TypedDicts auto-generated from the Apify OpenAPI spec and postprocessed; must change only via the generator, never by hand.	1
src/apify_client/_literals.py	Literal types auto-generated by the model postprocessing script from the OpenAPI spec; must change only via the generator, never by hand.	1

Refs https://github.com/apify/ai-developer/blob/main/actions/auto-approve/README.md

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.46%. Comparing base (ef8f088) to head (337db3d).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1130   +/-   ##
=======================================
  Coverage   95.46%   95.46%           
=======================================
  Files          61       61           
  Lines        5935     5935           
=======================================
  Hits         5666     5666           
  Misses        269      269           

Flag	Coverage Δ
integration	90.73% <ø> (+0.13%)	⬆️
unit	88.87% <ø> (ø)

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