Fix IMU ang MAG, added MAG chart to svelte

app/src/routes/peripherals/imu/imu.svelte

@@ -245,6 +245,10 @@
             angleChart.update('none')
         }
 
+        if ($features.mag) {
+            updateChartData(magnetometerChart, $imu.heading)
+        }
+
         if ($features.bmp && tempChart && altitudeChart) {
             updateChartData(
                 tempChart,

esp32/include/peripherals/imu.h

@@ -60,6 +60,7 @@ class IMU : public SensorBase<IMUAnglesMsg> {
     _imu->setFullScale((ICM_20948_Internal_Acc | ICM_20948_Internal_Gyr), myFSS);
     if (_imu->status != ICM_20948_Stat_Ok){ return false; }
     // TODO: Setup low pass filter config
+    _msg.success = true;
 #endif
         return _msg.success;
     }

esp32/include/peripherals/magnetometer.h

@@ -26,6 +26,7 @@ class Magnetometer : public SensorBase<MagnetometerMsg> {
             
             _mag->startupMagnetometer();
             if (_mag->status != ICM_20948_Stat_Ok){ return false; }
+            _msg.success = true;
         #elif FT_ENABLED(USE_HMC5883)
             _msg.success = _mag.begin();
         #endif