docs: comprehensive README with all 9 IDE integrations + glama.json

Complete rewrite of README with setup guides for Cursor, VS Code, Claude Code,
Claude Desktop, Windsurf, Gemini CLI, Gemini Code Assist, Opencode, Zapier,
and ElevenLabs. Added glama.json for Glama MCP directory listing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people