[DJI] Add ESC telemetry support and additional configuration parameters to DJI OSD

[digitalentity]

(1) This PR enables support for ESC temperature in DJI OSD.

(2) It's possible to re-purpose ESC temperature element to show IMU or BARO temperature using dji_esc_temp_source config parameter.

(3) DJI OSD uses non-compliant MSP_ESC_SENSOR_DATA message in firmware 1.00.06. We have dji_workarounds parameter to account for that. If DJI suddenly fixes the MSP_ESC_SENSOR_DATA format to align with Betaflight, we can use dji_workarounds to revert the change without having to do an emergency patch release.

(4) New parameter dji_use_name_for_messages additionally guards the possibility to re-purpose the craft name field to show warnings and other useful info. Craft name is expected to be in format :WTSED where each individual letter stands for a different message type:

    // :W T S E D
    //  | | | | Distance Trip
    //  | | | Efficiency mA/KM
    //  | | S 3dSpeed
    //  | Throttle
    //  Warnings