Enable Multilingual Support in the Dev Documentation

[magicstone1412]

As a potential contributor (cb-applicant), I'd like to propose the implementation of a multilingual feature in the project's dev documentation.

I believe that enabling multilingual support will greatly enhance the accessibility of the documentation, allowing contributors from various linguistic backgrounds, like myself, to collaborate more effectively on GitHub and translate the content into their native languages.

I have experience in the following areas that I believe would be valuable for this initiative:

1. mdbook: I have experience using mdbook and am comfortable with its functionalities.

2. GitHub Active: I am an active user of GitHub, and I understand the platform's workflow and best practices for collaboration.

3. Technical Translation: I have experience in technical translation, which means I can ensure high-quality for my translation.

I'd to register the Vietnamese language as a supported language for the project.

I hope that my proposal will be considered and accepted. Thank you.