feat(api): align SDK with KSeF API 2.2.0

[smekcio]

Summary

• add support for POST /permissions/query/entities/grants (sync + async clients)
• regenerate OpenAPI models to include 2.2.0 schemas (clientIp, Problem Details, entity permissions query models)
• map clientIp in high-level auth challenge model
• handle application/problem+json (and other +json) in HTTP error parsing
• update docs compatibility reference to API 2.2.0

Validation

• .venv\\Scripts\\python.exe -m pip check
• .venv\\Scripts\\python.exe tools/lint.py
• .venv\\Scripts\\python.exe -m pytest --cov=ksef_client --cov-report=term-missing --cov-fail-under=100
• python tools/check_coverage.py --openapi ksef-docs/open-api.json --src src/ksef_client/clients --exclude-files lighthouse.py
• python tools/check_coverage.py --openapi ../temp/openapi-test-v2.json --src src/ksef_client/clients --exclude-files lighthouse.py

Closes #24