Add ecosystem page for website

[skzhang1]

NEED HELP !!

1. Does anyone know how to render the posts in a style like https://boxyhq.com/blog with icons?
2. Enrich the ecosystem page (application + examples)
3. Any other suggestions regarding the website.

Why are these changes needed?

1. Add ecosystem page
2. Add a link to the playground https://huggingface.co/spaces/thinkall/AutoGen_Playground
3. Move examples to the ecosystem page

Related issue number

Closes #799
Closes #699

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.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f812a23) 27.76% compared to head (1a54573) 27.76%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #803   +/-   ##
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  Coverage   27.76%   27.76%           
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  Files          27       27           
  Lines        3493     3493           
  Branches      791      791           
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  Hits          970      970           
  Misses       2452     2452           
  Partials       71       71           

Flag	Coverage Δ
unittests	27.71% <ø> (ø)

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[skzhang1]

[sonichi]

Please pre-commit for code formatting.

[skzhang1]

[qingyun-wu]

• For each entry in "Ecosystem", use a link to the corresponding integration/documentation instead of directly copying the content.
• Under "Examples" only include one single file (merge the content from the existing two files).

[qingyun-wu]

Did you update the PR? I don't see the "Resources" tab.

[skzhang1]

Did you update the PR? I don't see the "Resources" tab.

Done. Please take a look for the screenshot

[qingyun-wu]

Add a resources page.

[qingyun-wu]

Have you made the requested changes? If so, could you please share what it looks like?