Explicitly warn that "Media read-only" will also lead to the GPS Location tags loss from all pictures!

[mnalis]

Is your feature request related to a problem? Please describe.

Upon installing the android client, user is asked whether they'd like to grant "Media read-only" or "Full access"

android/app/src/main/res/values/strings.xml

Line 1098 in 0a98a95

<string name="file_management_permission_text">%1$s needs file management permissions to upload files. You can choose full access to all files, or read-only access to photos and videos.</string>

However, the question is extremely misleading, as it is not mentioned that choosing what seems as a safe value if one only wants to sync pictures ("Media read-only") it will lead to silent data loss by system removing Location/GPS tags from all pictures before they're backed up on Nextcloud server!

see e.g. #6248 (comment) and all the data loss problems people are having.

Describe the solution you'd like

Explicitly warn the users that choosing "Read-only" will lead to permanent loss of Location tags from all the pictures that are "backup up" to the Nextcloud server.

Describe alternatives you've considered

• Nextcloud client could alternatively perhaps always request location permission, so GPS Location EXIF tags won't get stripped. For example, I can share pictures to Wikimedia Commons app without GPS location being lost, so perhaps similar solution could work for Nextcloud client too.

• Or, nextcloud client could explicitly ask users if they'd like to preserve Location tags on their pictures, and if so, refuse to proceed unless required permissions are granted or the users chooses they don't want Location preserved afterall.