Add OTel GenAI traces:
- `create_agent`
- `invoke_agnet`
- `execute_tool`

Introduces context manager helpers to create these traces. The helpers
also serve as instrumentation points for other instrumentation
libraries.

Resolves #6644

Update version

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## Why are these changes needed?

(Partially?) fixes accessibility issue (19). Question out to
accessibility team whether its enough.

Migrating to 16.0 for accessibility fixes. Not moving to 16.1 yet
because of a weird change to the 'Show Source' link's appearance

## Related issue number

#5630 

## Checks

- [ ] I've included any doc changes needed for
<https://microsoft.github.io/autogen/>. See
<https://github.com/microsoft/autogen/blob/main/CONTRIBUTING.md> to
build and test documentation locally.
- [ ] I've added tests (if relevant) corresponding to the changes
introduced in this PR.
- [ ] I've made sure all auto checks have passed.

Co-authored-by: Ryan Sweet <rysweet@microsoft.com>

Closes #5074

Signed-off-by: Mohammad Mazraeh <mazraeh.mohammad@gmail.com>

* use caching to run tests and report coverage

* fix test step dep name

* try to fix cov fname

* add working dir to mv step

* update artifact download

* fmt

* reduce concurrency on ext test

---------

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

* Update version to 0.4.3

* lock

* update lock

* lock

* Update version to 0.4.1

* lock

* dest dir

* remove website changes

* Update all versions to 0.4.0

* update redirect

* install with upgrade for agentchat

* Reduce dependencies of core

* Update lock

* add package to test deps

* Update lock

* aio console dep

* Update lock

* Update tutorial content; move selector group chat and swarm outside of tutorial.

* Add redirect

---------

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

* Add coverage task & integrate with poe check

* Adding workflow

---------

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

* dev12

* Fix definition of workspace package, remove uv pin

* add  --all-packages

* pin docs uv versions for older project structure

* try old version to verify CI

* Use workflow target

* change syntax

* change check

* try with var in matrix

* add all packages to workspace

* remove project table

* Update pydantic version & fix mypy errors

* uv lock changes

* Update lock

* update lockfile

---------

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

* dev11 release

* Update version for dev10

* fix notebook

* Add user proxy docs. Make user proxy's default impl cancellable

* remove unnecessary import

* revert accidental change

* address PR comments

* uv sync

* Fix bugs

* poe format

* fixing mypy issues

* poe format

* ignore pyright errors for ainput

* fix example code

* remove unused import

* fix accidental reversion, example code

* formatting

* fix typing

* Update python/packages/autogen-core/docs/src/user-guide/agentchat-user-guide/tutorial/agents.ipynb

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update python/packages/autogen-core/docs/src/user-guide/agentchat-user-guide/tutorial/agents.ipynb

---------

Co-authored-by: Jack Gerrits <jackgerrits@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>

* dev9

* API documentation page refactor

* Fix links and unused pages

---------

Co-authored-by: Jack Gerrits <jack@jackgerrits.com>

* Move grpc runtimes to ext, flatten application

* rename to grpc

* fmt

* adds a python xlang sample and aspire code to host it
* fixes message delivery on dotnet runtime