Added new mode for Euler angles and Sensor data.

[msis]

A new mode has been added to support sending both Euler angles and sensor data at the same time.
This mode can be activated by:

• "#omrb" for Yaw Roll Pitch and raw sensor data in BINARY
• "#omcb" for Yaw Roll Pitch and calibrated sensor data in BINARY
• "#omrt" for Yaw Roll Pitch and raw sensor data in TEXT
• "#omct" for Yaw Roll Pitch and calibrated sensor data in TEXT