Implement RC and DL failsafe action handling for multirotors

Move RC and DL failsafe actions handling from navigator to commander (credits to @AndreasAntener)
Separate manual kill switch handling via manual_lockdown to prevent override and release of software lockdown by RC switch

Other changes:
Add failsafe tune
Fix LED blinking for Pixracer
Return back support for rc inputs in simulator but now it is configurable via cmake

src/modules/navigator/navigator_params.c

@@ -110,6 +110,9 @@ PARAM_DEFINE_FLOAT(NAV_MC_ALT_RAD, 3.0f);
  * @value 1 Loiter
  * @value 2 Return to Land
  * @value 3 Land at current position
+ * @value 4 Data Link Auto Recovery (CASA Outback Challenge rules)
+ * @value 5 Terminate
+ * @value 6 Lockdown
  *
  * @group Mission
  */
@@ -128,6 +131,9 @@ PARAM_DEFINE_INT32(NAV_DLL_ACT, 0);
  * @value 1 Loiter
  * @value 2 Return to Land
  * @value 3 Land at current position
+ * @value 4 RC Auto Recovery (CASA Outback Challenge rules)
+ * @value 5 Terminate
+ * @value 6 Lockdown
  *
  * @group Mission
  */