feat(apify): add bounded Xquik Actor routes

[kriptoburak]

Summary

• add Xquik Tweet and Follower Actor routes to the web-scraping and social skills
• preserve the existing official X read and write tools
• add bounded schema-valid examples, spending approval, public-data, privacy, and inference safeguards
• switch the generic Apify runner to ApifyClientAsync so it does not block HuMCP's async server
• expose max_items and max_total_charge_usd, bound dataset retrieval, and return the Apify run ID
• add 8 regression tests for limits, provenance, credentials, malformed run details, and provider failures

Validation

• uv run pytest: 409 passed, 1 skipped
• uv run ruff check: passed
• uv run mypy src/: passed for 190 source files
• configured pre-commit hooks on all changed files: passed
• both SKILL.md files pass the Skill Creator validator
• git diff --check: passed

No Actor was run and no Apify credits were used.

[kriptoburak]

GitHub marked the current head's Actions runs as action_required before jobs were created. A maintainer needs to approve these fork workflows so the repository checks can execute:

• CI

All available local checks are documented in the PR. No Actor was run.