feat: cache content of different tabs 🚀

[alperozturk96]

• Tests written, or not not needed

Moves IO tasks from main thread
Uses cached entries for search task
Faster file list filtering
Only update the adapter if data is changed (swapDirectory gets called multiple times with same data inner check must be implemented and also swapDirectory calls needs to be checked in different PR)

[github-actions]

test-Unit test failed: https://www.kaminsky.me/nc-dev/android-integrationTests/15988-Unit-test-12-53

[github-actions]

Codacy

SpotBugs

Category	Base	New
Bad practice	42	42
Correctness	73	73
Dodgy code	272	272
Experimental	1	1
Internationalization	7	7
Malicious code vulnerability	2	2
Multithreaded correctness	35	35
Performance	48	48
Security	18	18
Total	498	498

[github-actions]

APK file: https://www.kaminsky.me/nc-dev/android-artifacts/15988.apk



To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.