Sharing photos doesnt work on Android 10

[broodroosterdev]

First of all, great job on the app. Even as an early version it is surprisingly well done.

When trying to share a photo on Android 10, the share window briefly shows after which the app crashes.
This is due to the permission denial as further explained in this issue.

A quick fix would be to change the pubspec.yaml to:

esys_flutter_share:
    git:
        url: git://github.com/jawad12345A/esys-flutter-share.git

However this wouldn't be a future-proof solution.
A PR has been created but hasn't been merged yet esysberlin/esys-flutter-share#63