* Added example with stateful middleware
* Added chat middleware
* Updated middleware example with override scenario
* Small revert
* Small fixes
* Added kwargs to context objects
* Added README
* Added function middleware to chat client
* Small refactoring
* Reverted example files
* Made MiddlewareWrapper generic
* Added Middleware exception
* Small refactoring
* Small fix
* Azure Responses client
* Fix a change made in the wrong place
* allow api_version and token_endpoint to use env vars
* Add getting started sample
* add responses deployment name env var
* update azure clients to use defaults for api_version and token_endpoint
* make tests more reliable
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Co-authored-by: Chris <66376200+crickman@users.noreply.github.com>