Catch up to arklib #56

[kirillt]

https://github.com/ARK-Builders/arklib-android/pull/56

Opening folders created before this PR might require erasure of .ark/meta folder.

• [x] Verify that stats work
• [x] Verify that thumbnails, previews and icons work
• [x] Verify that JSONs are persisted as plain text
• [x] Verify that tags and scores work
• [x] Verify that existing folders can be opened
• [x] Verify aggregated mode
• [x] Bring back corrupted storage dialog
• [x] Remove commented-out code

Current bugs of this PR:

• [x] When user deletes a resource in Gallery screen, and goes back to Resource Grid: the removed item is still there. The user needs to quit into Folders screen and load the folder again.
• [x] When a resource is deleted externally, same steps needs to be done to remove it from Resource Grid.
• [ ] When a resource is added externally, the user needs to restart the app to discover it.
• [x] SVG files crash the app.
• [x] "Labeled-time" tag metric doesn't work ("queried-time" metric works fine).
• [x] Re-indexing is triggered too often when entering Gallery screen, it essentially stops user flow for long time on huge collections.
• [ ] When entering Gallery screen, UI is blocked for some time (more than 1 sec)
• [ ] When returning from Retouch and the image was overwritten, the app crashes

[kirillt]

Enabling it for all resources without preview might be useful for debugging too: https://github.com/ARK-Builders/ARK-Navigator/issues/205

[kirillt]

When returning from Retouch and the resource was overwritten:

http://65.21.4.137:8080/app/1/bug/251/report/cddfdbab-5d7f-427e-ae73-39ee4c840c4b

java.lang.IllegalStateException: Index is not up-to-date regarding path /storage/emulated/0/Pictures/Screenshots/Screenshot_20230722-164758_ARK Retouch.png
    at space.taran.arknavigator.mvp.presenter.GalleryPresenter$checkResourceChanges$1.invokeSuspend(GalleryPresenter.kt:373)
    at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
    at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
    at kotlinx.coroutines.internal.LimitedDispatcher.run(LimitedDispatcher.kt:42)
    at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:95)

[kirillt]

Not everything is perfect, but we have new impressive functionality and rebuilt many things from ground-up. We have to find performance bottlenecks in the current implementation and improve it in the nearest future.