feat(platform): Add basic library functionality

[Swiftyos]

Add functionality to allow users to add agents to their library from the store page.

[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 4 🔵🔵🔵🔵⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Error Handling The error handling in get_library_agents() could be improved by adding specific error types for different failure scenarios rather than catching all exceptions in one block Potential Race Condition The add_agent_to_library function does not check if a UserAgent entry already exists before creating a new one, which could lead to duplicate entries Error Feedback The handleAddToLibrary function only logs errors to console without showing any user feedback when the operation fails

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[github-actions]

This pull request has conflicts with the base branch, please resolve those so we can evaluate the pull request.

[github-actions]

Conflicts have been resolved! 🎉 A maintainer will review the pull request shortly.

[Bentlybro]

Tested and this works