Merge multi_converter from https://github.com/xMasterX/all-the-plugins

# Conflicts:
#	multi_converter/multi_converter.c

multi_converter/multi_converter.c

@@ -22,8 +22,8 @@ static void multi_converter_render_callback(Canvas* const canvas, void* ctx) {
 }
 
 static void multi_converter_input_callback(InputEvent* input_event, void* ctx) {
+    furi_assert(ctx);
     FuriMessageQueue* event_queue = ctx;
-    furi_assert(event_queue);
 
     MultiConverterEvent event = {.type = EventTypeKey, .input = *input_event};
     furi_message_queue_put(event_queue, &event, FuriWaitForever);