Add DUAL_GYRO_SCALED debug mode to capture raw scaled roll/pitch from each gyro

Data is before the filters but scaled to 0-2000dps.

debug(0) = gyro 1 roll
debug(1) = gyro 1 pitch
debug(2) = gyro 2 roll
debug(3) = gyro 2 roll

src/main/build/debug.h

@@ -101,6 +101,7 @@ typedef enum {
     DEBUG_D_MIN,
     DEBUG_AC_CORRECTION,
     DEBUG_AC_ERROR,
+    DEBUG_DUAL_GYRO_SCALED,
     DEBUG_COUNT
 } debugType_e;