Room member moderation: kick, ban and unban (#2496)

* Room member moderation: kick, ban and unban

---------

Co-authored-by: ElementBot <benoitm+elementbot@element.io>

libraries/core/src/main/kotlin/io/element/android/libraries/core/extensions/Result.kt

@@ -47,3 +47,9 @@ inline fun <R, T> Result<T>.flatMapCatching(transform: (T) -> Result<R>): Result
         onFailure = { Result.failure(it) }
     )
 }
+
+inline fun <T> Result<T>.finally(block: (exception: Throwable?) -> Unit): Result<T> {
+    onSuccess { block(null) }
+    onFailure(block)
+    return this
+}