Added gyro_stage_2_filter_type and Kalman Q & R values to the configurator UI

[LexioTech]

• Added Stage 2 Filter setting [dropdown] to PID Tuning ->Filters tab (Expert mode only)
• Added warning message for Stage 2 Filter usage (Expert mode only)
• Added Kalman Q & R values setting panel (Only when FAST KALMAN or FIXED K KALMAN Stage 2 Filter is used)
• Added relevant help for new config values
• Added translations for all supported languages
• New config values are only available from MSP protocol version 1.40.0