Add automation skills for all 874 Composio toolkits

- 832 new automation skills covering every toolkit on composio.dev
- Updated 78 existing skills with composio.dev/toolkits links
- Total: 910 automation skills
- Each skill includes toolkit slug, connection flow, tool discovery
  pattern, and links to composio.dev toolkit docs
- All skills include "Powered by Composio" attribution

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