Add ASGI-native logging pipeline

[vishalanandl177]

Summary

• Add a dual sync/async APILoggerMiddleware entrypoint for ASGI-served Django/DRF requests while preserving existing sync middleware behavior.
• Share resolver, tracing/correlation, profiling, log construction, database enqueue, and signal emission logic between sync and async paths.
• Add ASGI coverage for masking, queue failure isolation, content-type handling, truncation, path formatting, custom tracing, queue thresholds, and concurrent context isolation.
• Add ASGI setup docs and a scripts/measure_asgi_overhead.py benchmark helper.

Jira: https://coderssecret.atlassian.net/browse/SCRUM-13

Validation

• coverage run --source=drf_api_logger -m django test tests --settings=tests.test_settings --verbosity=1; coverage report -> 270 tests OK, total package coverage 93%, drf_api_logger\middleware\api_logger_middleware.py 100%.
• python -m build --sdist --wheel; python -m twine check dist\* -> wheel and sdist passed.
• git diff --cached --check -> passed before commit.
• PYTHONPATH=J:\projects\DRF-API-Logger J:\projects\drf-demo\venv\Scripts\python.exe manage.py test books --verbosity=1 -> 3 tests OK.

Local Matrix Exception

• tox --version -> tox command not found in this shell.
• python -m tox --version -> No module named tox.