* feat(python): enhance retry configuration in REST client
Updated the retry parameter in the Configuration class to support different types based on the library used (urllib3 or asyncio). Adjusted the RESTClientObject to handle the new retry configuration, allowing for more flexible retry options. This change improves the handling of retries in API requests, ensuring compatibility with various retry strategies.
* add samples
* use async context for retry doc string
openapi-generator still uses methods that have been removed from urllib3
v2.6.0. The solution is as described in urllib3's changelog:
> Removed the HTTPResponse.getheaders() method in favor of
> HTTPResponse.headers. Removed the HTTPResponse.getheader(name,
> default) method in favor of HTTPResponse.headers.get(name, default).
> (#3622)
See https://urllib3.readthedocs.io/en/latest/changelog.htmlClose#22514
* fix: do not add dependency on urllib3 if not required
* update samples
* remove import
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Co-authored-by: Sascha Kreutz <saschakreutz@hotmail.de>
* Expose mtls config params in python template
* Expose certFile and keyFile configuration items to support mtls in php generated client
* Regenerate of examples
* [python] fix#19255 add async httpx support
* update docs
* 1. "async" parameter for templates
2. hand written tests for python-httpx
3. CI workflow updated
* fix mypy
