[Docs] Generate notebooks section

[harishmohanraj]

Related issue number

Closes #1052

Checks

• I've included any doc changes needed for https://docs.ag2.ai/. See https://docs.ag2.ai/docs/contributor-guide/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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ There is a different number of reports uploaded between BASE (e627c1c) and HEAD (70af104). Click for more details.

HEAD has 1272 uploads less than BASE

Flag	BASE (e627c1c)	HEAD (70af104)
3.9	83	0
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commsagent-telegram	9	0
3.10	96	0
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3.13	86	0
core-without-llm	14	1
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3.11	64	1
macos-latest	105	0
3.12	36	0
commsagent-slack	9	0
windows-latest	114	0
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retrievechat-mongodb	10	0
interop	13	0
retrievechat-qdrant	14	0
retrievechat	15	0
graph-rag-falkor-db	6	0
crawl4ai	13	0
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docs	6	0
interop-langchain	9	0
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ollama	15	0
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integration	12	0
falkordb	2	0
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autobuild	1	0
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openai	1	0

see 70 files with indirect coverage changes

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