[Android] Support "partial access to photos and videos" for devices running Android 14

[ath0mas]

Feature Request

Motivation Behind Feature

Grant partial access to photos and videos is part of Android 14 Behavior changes: all apps.
And so, apply to all apps when they run on Android 14, regardless of targetSdkVersion!

Feature Description

Android 14 introduces Selected Photos Access, which allows users to grant apps access to specific images and videos in their library, rather than granting access to all media of a given type.

So, either:

• replace implementation and better use Photo picker instead
  (+1 for this, given [Android] Remove broad photo/video permissions and use a system picker - Google Play Policy deadline 2024-08 #288 !)
• adapt own code for "gallery picker", managing select or reselect media scenarios with READ_MEDIA_x permissions and the new READ_MEDIA_VISUAL_USER_SELECTED permission

Alternatives or Workarounds

If not implemented correctly

.. the system runs your app in a compatibility mode whenever the user needs to select or reselect media

See Compatibility mode.

[ath0mas]

Given the announced Policy update, described in #288, using a system picker and possibly Photo picker seems to be the only viable change to do.