CLI command to transpile CSS for code components

Overview

The CLI tool needs to be able to transpile the CSS code of local components. This is referring to individual CSS written for each component.

→ See: #3525571: [Meta] CLI tool for code components

Proposed resolution

1. Implement this command using Lightning CSS with the same configuration as Tailwind CSS and tailwindcss-in-browswer: https://github.com/tailwindlabs/tailwindcss/blob/v4.1.4/packages/%40tail....
2. Read the location for your local directory for components from an environment variable or .env file established in #3525579: Implement client credentials flow in CLI, centralize managing config.
3. Allow users to select components interactively or passed as a CLI argument. Make sure there is an option to select all.
4. Write the output to dist/index.css inside the directory of every component.
5. Extend the upload command (#3525587: CLI command to upload code components) to run this compilation, and upload the compiled CSS for the component(s).