Add a way to clear the cache for a specific room.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/room/MatrixRoom.kt

@@ -232,6 +232,11 @@ interface MatrixRoom : Closeable {
      */
     suspend fun setUnreadFlag(isUnread: Boolean): Result<Unit>
 
+    /**
+     * Clear the event cache storage for the current room.
+     */
+    suspend fun clearEventCacheStorage(): Result<Unit>
+
     /**
      * Share a location message in the room.
      *