feat(sync): download folder including all nested files

[alperozturk96]

Issue: #269

Any feedback regarding icons and wording?

@AndyScherzinger @kra-mo

[github-actions]

APK file: https://www.kaminsky.me/nc-dev/android-artifacts/16744.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.

[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	39	39
Correctness	74	74
Dodgy code	236	235
Experimental	1	1
Internationalization	7	7
Malicious code vulnerability	2	2
Multithreaded correctness	34	34
Performance	43	43
Security	18	18
Total	454	453

[AndyScherzinger]

Icon looks okay to me, didn't find any thats would be a better option match, maybe @kra-mo has an idea.

Other than that for me the question would be the position in the list. I would put it below the sync item, so it is close in terms of feature. It does however raise the question why there is is sync and sync all.

[alperozturk96]

Icon looks okay to me, didn't find any thats would be a better option match, maybe @kra-mo has an idea.

Other than that for me the question would be the position in the list. I would put it below the sync item, so it is close in terms of feature. It does however raise the question why there is is sync and sync all.

Sync -> Downloads first hierarchy
Sync all -> Downloads entire folder hiearchy