Resolves #3983

* introduce `model_client_stream` parameter in `AssistantAgent` to
enable token-level streaming output.
* introduce `ModelClientStreamingChunkEvent` as a type of `AgentEvent`
to pass the streaming chunks to the application via `run_stream` and
`on_messages_stream`. Although this will not affect the inner messages
list in the final `Response` or `TaskResult`.
* handle this new message type in `Console`.

Resolves #5222

* Rebase to latest main branch

* Moved _azure module to azure

* Validate extra_create_args in and json response

* Added Support for Github Models

* Added normalize_name and assert_valid name

* Added Tests for AzureAIChatCompletionClient

* WIP: Azure AI Client

* Added: object-level usage data
* Added: doc string
* Added: check existing response_format value
* Added: _validate_config and _create_client

* lint

* merge dependencies

* add tests for img and function calling

* support actual tests through env vars

* address mypy errors

* doc example fix

* fmt

* fix doc fmt

* Update python/packages/autogen-ext/src/autogen_ext/models/azure/_azure_ai_client.py

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Co-authored-by: Rohan Thacker <thackerrohan4@gmail.com>
Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>
Co-authored-by: Leonardo Pinheiro <lpinheiro@microsoft.com>

* fix: use tool_calls field to detect tool calls in OpenAI client

* Add unit tests for tool calling; and integration tests for openai and gemini

* initial sk model adapter implementation

* add sk tool module

* implement streaming and update tests

* update lock

* linting

* add semantic kernel extras

* add docstring and format

* update dependencies and format/lint

* add model info to sk constructor

* update uv.lock

* customize prompt settings

* update uv.lock

* add docs

* fix sk docstring linting

* update create docstrings

* fmt and improve tool docstring

* update sk tool docs

* coerce doc json serialization failure

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Co-authored-by: Leonardo Pinheiro <lpinheiro@microsoft.com>

* Add ChatCompletionCache along with AbstractStore for caching completions

* Addressing comments

* Improve interface for cachestore

* Improve documentation & revert protocol

* Make cache store typed, and improve docs

* remove unnecessary casts

* Add support for model family specification

* spelling mistake

* lint, etc

* fixes

* add models.openai namespace

* refactor tools namespace

* update lock file

* revert pyproject changes

* update docs and add cast

* update ext models doc ref

* increase underline

* add reply models namespace

* update imports

* fix test

* linting

* fix missing conflicts

* revert pydantic changes

* rename to replay

* replay

* fix reply

* Fix test

* formatting

* example

---------

Co-authored-by: Leonardo Pinheiro <lpinheiro@microsoft.com>
Co-authored-by: Jack Gerrits <jack@jackgerrits.com>
Co-authored-by: Jack Gerrits <jackgerrits@users.noreply.github.com>

* Move model context out of components

* move models out of components

* rename docs file

* Move grpc runtimes to ext, flatten application

* rename to grpc

* fmt

1. convert dataclass types to pydantic basemodel 
2. add save_state and load_state for ChatAgent
3. state types for AgentChat
---------

Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

* Flatten core base and components

* remove extra files

* dont export from deprecated locations

* format

* fmt

* Add warnings for deprecated azure oai config changes

* Update docs and usages, simplify capabilities

* delete files and update dependencies

* add explicit config exports

* ignore mypy error on nb

---------

Co-authored-by: Leonardo Pinheiro <lpinheiro@microsoft.com>
Co-authored-by: Jack Gerrits <jackgerrits@users.noreply.github.com>

* initial implementation of reply chat completion client

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Signed-off-by: Mohammad Mazraeh <mazraeh.mohammad@gmail.com>
Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

* Fix: `create_stream` to return valid usage token counts
* documentation

---------

Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

* migrate models

* Update python/packages/autogen-agentchat/src/autogen_agentchat/agents/_tool_use_assistant_agent.py

Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

* refactor missing imports

* ignore type check errors

* Update python/packages/autogen-ext/src/autogen_ext/models/_openai/_model_info.py

Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

* update packages index page

---------

Co-authored-by: Leonardo Pinheiro <lpinheiro@microsoft.com>
Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>