Auto-Install Dependencies for New TypeScript Srcbooks

Objective

Automatically install required dependencies (tsx, typescript, @types/node) when creating a new TypeScript Srcbook, eliminating the need for the "install dependencies" toast, which needs to be clicked 100% of the time.

Current Behavior

• "Install dependencies" toast appears when creating a new TS Srcbook

Proposed Change

• Automatically install tsx, typescript, and @types/node upon TS Srcbook creation

Considerations

• Block running cells until completed?
• Handle scenarios where auto-installation fails
• Consider allowing users to opt-out of auto-installation