ArduPlaneFirmwarePlugin: Add THERMAL mode. (#9089)

src/FirmwarePlugin/APM/ArduPlaneFirmwarePlugin.cc

@@ -39,6 +39,7 @@ APMPlaneMode::APMPlaneMode(uint32_t mode, bool settable)
         { QRTL,             "QuadPlane RTL" },
         { QAUTOTUNE,        "QuadPlane AutoTune" },
         { QACRO,            "QuadPlane Acro" },
+        { THERMAL,          "Thermal"},
     });
 }
 
@@ -68,6 +69,7 @@ ArduPlaneFirmwarePlugin::ArduPlaneFirmwarePlugin(void)
         APMPlaneMode(APMPlaneMode::QRTL,            true),
         APMPlaneMode(APMPlaneMode::QAUTOTUNE,       true),
         APMPlaneMode(APMPlaneMode::QACRO,           true),
+        APMPlaneMode(APMPlaneMode::THERMAL,         true),
     });
 
     if (!_remapParamNameIntialized) {

src/FirmwarePlugin/APM/ArduPlaneFirmwarePlugin.h

@@ -44,6 +44,7 @@ public:
         QRTL          = 21,
         QAUTOTUNE     = 22,
         QACRO         = 23,
+        THERMAL       = 24,
     };
 
     APMPlaneMode(uint32_t mode, bool settable);