ArduRoverFirmware: add support for ManualControl

src/FirmwarePlugin/APM/ArduRoverFirmwarePlugin.cc

@@ -111,3 +111,8 @@ bool ArduRoverFirmwarePlugin::supportsNegativeThrust(void)
 {
     return true;
 }
+
+bool ArduRoverFirmwarePlugin::supportsManualControl(void)
+{
+    return true;
+}

src/FirmwarePlugin/APM/ArduRoverFirmwarePlugin.h

@@ -56,6 +56,7 @@ public:
     int     remapParamNameHigestMinorVersionNumber  (int majorVersionNumber) const final;
     const FirmwarePlugin::remapParamNameMajorVersionMap_t& paramNameRemapMajorVersionMap(void) const final { return _remapParamName; }
     bool supportsNegativeThrust(void) final;
+    bool supportsManualControl(void) final;
 
 private:
     static bool _remapParamNameIntialized;