Add c/cpp code support

[ginazhouhuiwu]

Adding c/cpp support to gr.Code.languages

Closes: #8584

c code example!

[gradio-pr-bot]

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---

Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/a2da84a724bc8d958930588c1b36ba1e1748e861/gradio-4.37.2-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@a2da84a724bc8d958930588c1b36ba1e1748e861#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-builds.s3.amazonaws.com/a2da84a724bc8d958930588c1b36ba1e1748e861/gradio-client-1.2.1.tgz

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/code	minor
gradio	minor

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With the following changelog entry.

Add c/cpp code support

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[abidlabs]

LGTM works great, thanks @ginazhouhuiwu for this contribution!