feature(mobile): hash assets & sync via checksum (#2592)

* compare different sha1 implementations

* remove openssl sha1

* sync via checksum

* hash assets in batches

* hash in background, show spinner in tab

* undo tmp changes

* migrate by clearing assets

* ignore duplicate assets

* error handling

* trigger sync/merge after download and update view

* review feedback improvements

* hash in background isolate on iOS

* rework linking assets with existing from DB

* fine-grained errors on unique index violation

* hash lenth validation

* revert compute in background on iOS

* ignore duplicate assets on device

* fix bug with batching based on accumulated size

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Co-authored-by: Fynn Petersen-Frey <zoodyy@users.noreply.github.com>

mobile/android/build.gradle

@@ -1,5 +1,6 @@
 buildscript {
     ext.kotlin_version = '1.8.20'
+    ext.kotlin_coroutines_version = '1.7.1'
     ext.work_version = '2.7.1'
     ext.concurrent_version = '1.1.0'
     ext.guava_version = '31.0.1-android'