Add support for Antigravity CLI

[harsh2hell]

Feature Request: Antigravity CLI Support

OpenWhip is currently designed to work with Claude Code, but it would be great to have support for Google's Antigravity CLI as well.

I regularly use Antigravity CLI as an AI coding agent, and I'd love to have the same OpenWhip functionality available when Antigravity is running.

What I'd like

• Detect when Antigravity CLI is the active/running coding agent
• Allow OpenWhip to interrupt Antigravity in the same way it currently interrupts Claude Code
• Send the same type of "whip" / encouraging message after interrupting it
• Keep the existing Claude Code support unchanged

Essentially, I'd like OpenWhip to support both:

• Claude Code
• Antigravity CLI

Antigravity CLI is now available as a terminal-based agent, so adding support for it would make OpenWhip useful for more AI coding workflows.

Thanks! ❤️