Remove rxjava from API calls used by AccountViewModel::changeRelationship() (#3008)

* Remove rxjava from API calls used by AccountListFragment

* Remove rxjava from API calls used by AccountViewModel::changeRelationship()

The affected API functions are also called from

- ReportViewModel.kt
- SearchViewModel.kt
- AccountListFragment.kt
- SFragment.java
- TimelineCases.kt

so they have also been updated.

This change requires bridging from Java code to Kotlin `suspend` functions,
by creating wrappers for the `mute` and `block` functions that can be
called from Java and create a coroutine scope.

I've deliberately made this fairly ugly so that it sticks out and can be
removed later.

* Use "Throwable" type and name

* Delete 46.json

Not sure where this came from.

* Emit log messages with the correct tag

* Add another log tag, and lint

* Move viewModelScope.launch in to changeRelationshop()

app/src/main/java/com/keylesspalace/tusky/components/search/SearchViewModel.kt

@@ -32,6 +32,7 @@ import com.keylesspalace.tusky.util.toViewData
 import com.keylesspalace.tusky.viewdata.StatusViewData
 import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
 import io.reactivex.rxjava3.core.Single
+import kotlinx.coroutines.launch
 import javax.inject.Inject
 
 class SearchViewModel @Inject constructor(
@@ -169,7 +170,9 @@ class SearchViewModel @Inject constructor(
     }
 
     fun muteAccount(accountId: String, notifications: Boolean, duration: Int?) {
-        timelineCases.mute(accountId, notifications, duration)
+        viewModelScope.launch {
+            timelineCases.mute(accountId, notifications, duration)
+        }
     }
 
     fun pinAccount(status: Status, isPin: Boolean) {
@@ -177,7 +180,9 @@ class SearchViewModel @Inject constructor(
     }
 
     fun blockAccount(accountId: String) {
-        timelineCases.block(accountId)
+        viewModelScope.launch {
+            timelineCases.block(accountId)
+        }
     }
 
     fun deleteStatus(id: String): Single<DeletedStatus> {