This PR updates the target SDK to version 33 and implements the new granular media access permissions (images, video, audio), described in the documentation.

On devices running older Android versions (< API 33), the original single Storage permission is requested, which gives access to all media. On versions 33 and up, new granular permissions are requested (images and video are requested in a single permission request, audio in another one).

Old version	New version

To test:

To test this PR, please prepare 2 devices/emulators with Android 33 and <33. Also make sure the devices have at least one image to display something (you can take a picture in the Camera app).

API 33:

1. Start with a clean installation of the sample app
2. Tap on the Local Device Picker button
3. Tap on the Allow button
4. Notice a permission request for music and audio appears
5. Grant the access
6. Notice another permission request appears, now for photos and videos
7. Grant the access
8. Notice the images stored on a device are listed
9. If you clear the app storage and try this again but deny the permissions (twice), you'll see the screen show on the screenshot above

API <33:

1. Repeat the same steps as for API 33
2. When you tap on the Allow button, you'll get a single permission request mentioning photos, media and files
3. If you deny the permission, you'll see the screen above