Add meta title and description section to Settings panel

[devin-ai-integration]

Add Meta Section to Settings Panel

This PR adds a section in the Settings panel for users to input page meta description and title, placing it below the "Custom Domain" section and above the "Danger Zone".

Implementation Details:

1. Added metaTitle and metaDescription optional fields to the Project model
2. Created a new MetaSection component with input fields for title and description
3. Updated the Domain tab to include the Meta Section between Custom Domain and Danger Zone
4. Initialized meta fields with empty strings in the createProject method to ensure persistence

The implementation allows users to set SEO metadata for their pages directly from the Settings panel.

Link to Devin run: https://app.devin.ai/sessions/29fa3d65e216430fafca7ae255c105f3

[devin-ai-integration]

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