Remove rxjava from deletestatus API (#3041)

* 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.

* Remove rxjava from the deleteStatus call path

* Emit log messages with the correct tag

* Add another log tag, and lint

* Use TAG in log messages now it's present

* Lint

* Move viewModelScope.launch in to changeRelationshop()

* Use onSuccess/onFailure pair instead of fold

* Return Deferred when deleting statuses

app/src/main/java/com/keylesspalace/tusky/usecase/TimelineCases.kt

@@ -16,6 +16,9 @@
 package com.keylesspalace.tusky.usecase
 
 import android.util.Log
+import at.connyduck.calladapter.networkresult.NetworkResult
+import at.connyduck.calladapter.networkresult.onFailure
+import at.connyduck.calladapter.networkresult.onSuccess
 import com.keylesspalace.tusky.appstore.BlockEvent
 import com.keylesspalace.tusky.appstore.BookmarkEvent
 import com.keylesspalace.tusky.appstore.EventHub
@@ -112,11 +115,10 @@ class TimelineCases @Inject constructor(
         }
     }
 
-    fun delete(statusId: String): Single<DeletedStatus> {
+    suspend fun delete(statusId: String): NetworkResult<DeletedStatus> {
         return mastodonApi.deleteStatus(statusId)
-            .doAfterSuccess {
-                eventHub.dispatch(StatusDeletedEvent(statusId))
-            }
+            .onSuccess { eventHub.dispatch(StatusDeletedEvent(statusId)) }
+            .onFailure { Log.w(TAG, "Failed to delete status", it) }
     }
 
     fun pin(statusId: String, pin: Boolean): Single<Status> {