Replace the npx stdio launch of @upstash/context7-mcp with Context7's
hosted remote MCP server (https://mcp.context7.com/mcp), matching the
configuration Upstash ships in upstash/context7 (plugins/claude/context7).
Adds a README and refreshes the plugin descriptions.
Co-Authored-By: Fahreddin Özcan <88107904+fahreddinozcan@users.noreply.github.com>
Driver: dir-plugin-add-official