feat(auto-upload): battery saver, batter optimization indication

[alperozturk96]

The difference between Android's battery saver mode and Nextcloud's app battery optimization mode was confusing. This PR clarifies that if user not has one of it.

Changes

• Detects battery optimization mode and battery saver mode and indicates both if needed.
• Adds to the activity XML instead of adapter's first section
• Fixes showing same banner for each section

[github-actions]

APK file: https://github.com/nextcloud/android/actions/runs/25058352829/artifacts/6686650006
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

APK file: https://github.com/nextcloud/android/actions/runs/25060519592/artifacts/6688365587
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[alperozturk96]

/backport to stable-33.1.x

[github-actions]

APK file: https://github.com/nextcloud/android/actions/runs/25094341195/artifacts/6701043178
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

APK file: https://github.com/nextcloud/android/actions/runs/25368366526/artifacts/6803481556
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

blue-Light-Screenshot test failed, but no output was generated. Maybe a preliminary stage failed.

[github-actions]

Codacy

SpotBugs

Category	Base	New
Bad practice	35	35
Correctness	67	67
Dodgy code	216	216
Experimental	1	1
Internationalization	7	7
Malicious code vulnerability	2	2
Multithreaded correctness	34	34
Performance	42	42
Security	16	16
Total	420	420