Incorporate LiDAR camera depth feed

[taesungh]

The LiDAR camera provides a depth map as a data array which we want to display on the GUI. Given the small image resolution and sampling rate, we could probably get by with sending the entire buffer without any compression.

• [Pod] Implement depth measurements from lidar camera #42
• Implement emergency stop using Lidar #94
• Pod operation: send the depth information as part of pod periodic emits
• GUI: Display graph of lidar data showing pods position from end of track