Invert picture rotation when using front camera

Author: andhieka

packages/camera/android/src/main/java/io/flutter/plugins/camera/Camera.java

@@ -248,7 +248,9 @@ public void takePicture(String filePath, boolean shouldAutoRotate, @NonNull fina
       final CaptureRequest.Builder captureBuilder =
           cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
       captureBuilder.addTarget(pictureImageReader.getSurface());
-      int mediaOrientation = shouldAutoRotate ? getMediaOrientation() : 90;
+      int mediaOrientation = shouldAutoRotate 
+          ? getMediaOrientation() 
+          : (isFrontFacing ? -90 : 90);
       captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, mediaOrientation);
 
       cameraCaptureSession.capture(