Add context7 extension

[ReAVRafalSztaba]

Description

Screencast

Checklist

• I read the extension guidelines
• I read the documentation about publishing
• I ran npm run build and tested this distribution build in Raycast
• I checked that files in the assets folder are used by the extension itself
• I checked that assets used by the README are placed outside of the metadata folder

[raycastbot]

Congratulations on your new Raycast extension! 🚀

You can expect an initial review within five business days.

Once the PR is approved and merged, the extension will be available on our Store.

[ReAVRafalSztaba]

It's my first time, I hope I did everything correctly. I believe its a great addition to a store and to RaycastAI.

[greptile-apps]

PR Summary

Here's my review of the new Context7 extension that integrates the Context7 Model Context Protocol with Raycast AI for documentation research:

The extension provides tools for finding and fetching documentation through natural language queries, integrating with Context7 MCP server for seamless documentation lookup within Raycast AI.

Key points to address:

• CHANGELOG.md title needs to use {PR_MERGE_DATE} template string instead of hardcoded date "2025-03-24"
• README.md title "Context7 Documentation Extension" doesn't match package.json title "Context7 Mcp" - they should be consistent
• Missing metadata folder with screenshots for the "About Context7" view command since this is labeled as a new extension
• Error handling in tools/*.ts files should use showFailureToast from @raycast/utils instead of throwing raw errors
• The "Let's" grammatical error in CHANGELOG.md features list should be "Lets"

_{💡 (1/5) You can manually trigger the bot by mentioning @greptileai in a comment!}

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[ReAVRafalSztaba]

I updated the code based on the greptile-apps bot review.