Prepare IMU & GPS data for Dead Reckoning

[jayalberts]

Please leave research notes here.

[jayalberts]

Spec coming later with Charles/Alexei/Nathaniel

[billettc]

• [x] Activate "Significant Motion detection".
• [x] Test digital filters for gyroscope, accelerometer, and temperature sensor
• [x] Detect sharp turn again acceleration data
• [x] Fix axis mapping CamX, CamY and camZ)
• [x] Merge imu and gnss data pipeline (Feed Merger)
• [x] Detect camera tilt
• [x] Use camera tilts to correct acceleration data