Add Lit template

[Sharmaz]

Description

Add a Lit template to the CLI so users can generate a new project based on Lit.
This will expand the available templates and align with the existing setup process.

You can follow the official contribution guide here:
How to add a new template

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Acceptance Criteria

• The CLI should allow creating a basic Lit project.
• The generated project must display the same initial view as other templates (including styles and enchilada-js-logo.svg).
• Ensure project structure follows the conventions used in other templates.
• (Optional) Add basic tests for the template.

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Notes

• Check how other frameworks (e.g. React, Vue) are implemented for consistency.
• Keep the template minimal but functional.