Magentic one example

[husseinmozannar]

Why are these changes needed?

Magentic-One has no example script showcasing how to create the agent team to solve tasks.

I create an example.py script to showcase magentic-one.

I also edited the orchestrator to return a final answer and not just the ledger.

I added minor comments to various magentic-one components to improve readability.

Related issue number

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation 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.

[husseinmozannar]

I'm still new to uv, not sure why uv.lock changed.

@afourney @gagb I added a simple example script for magentic-one, let's keep brainstorming about the API for magentic-one and migration to agent-chat

[husseinmozannar]

I think it will be valuable to create a frontend interface that visualizes the agent graph + ledger + chat, to create demos for magentic-one release - keeping this PR a draft while I work on that

[afourney]

Looks good.

[rysweet]

@husseinmozannar - is this still meant to be in draft?

[husseinmozannar]

@rysweet

@husseinmozannar - is this still meant to be in draft?

Just added a readme for the examples.

Feel free to merge now, instead of the interface, we will start with a log viewer. Thank you.