Improvements to the Content Upload Experience

Users will now receive an error message if there was an issue with a content file upload. For example, if ArborXR detects the uploaded APK was corrupted, if the package name was changed, or if an unsupported file type (e.g. OBBs, 360 video files) was uploaded, users will receive an email notifying them of the issue. In addition, if an unsupported file type like a 360 video file or OBB file is uploaded, users will receive an email notifying them that only APKs are supported.