Add build_run_device (like build_run_sim)

[SwifAI]

Feature Request

build_run_sim builds and launches the app on a simulator in a single step. There's no equivalent for physical devices.

Currently, running on a device requires 4 separate calls:

1. build_device
2. get_device_app_path
3. install_app_device
4. launch_app_device

Proposal

Add a build_run_device tool that combines all 4 steps into one, matching the convenience of build_run_sim.

This would significantly improve the workflow when iterating on a physical device, especially when using AI coding assistants that call these tools sequentially.

[cameroncooke]

Great idea, @cursor can you get on this, follow pattern in build-run-sim tool and open PR.