[Docs] Add chatTTS backend

[grorge123]

Explanation

Add chatTTS install documentation.

Related issue

#3547

What type of PR is this

/kind documentation

[alabulei1]

Hello, I am a code review bot on flows.network. Here are my reviews of code commits in this PR.

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Commit 8ca657dc6011c9a36ea8546bf89358e17280b87f

Key Changes:

• Added documentation on building WasmEdge with WASI-NN ChatTTS Backend.
• Provided commands to install dependencies such as python3-dev and chattts==0.1.1.
• Included instructions for building and installing WasmEdge from source with the ChatTTS backend.
• Added a note on setting the WASMEDGE_PLUGIN_PATH environment variable if the CLI tool cannot find the WASI-NN plugin.

Potential Problems:

1. It is important to ensure that the dependencies mentioned (python3-dev, chattts==0.1.1) are accurate and necessary for the ChatTTS backend.
2. The patch should provide more context or references to ChatTTS and Python libraries for users unfamiliar with them.
3. The patch could benefit from specifying specific versions or requirements for Python to manage compatibility issues.
4. The patch may need further clarification on potential issues users might face during the installation process.
5. It would be helpful to include information on any known limitations or known bugs related to the ChatTTS backend implementation.

Overall, the patch introduces the necessary steps to add the ChatTTS backend to WasmEdge effectively. However, adding some clarifications and details surrounding library dependencies and potential pitfalls can improve the user experience and adoption of this feature.