[FL-867] GUI: ViewPort arrangement API, better input and draw dispatching (#333)

* Input: refactoring, platform agnostic key configuration, update usage across project. Minor queue usage fixes and tick timings.
* Gui: lighter and more efficient input and draw call dispatching, ViewPort rearranging API. View: conditional model updates, API usage update.
* BT: smaller update delay
* GUI: ViewPort visibility check

applications/bt/bt.c

@@ -46,6 +46,6 @@ void bt_task() {
 
     while(1) {
         view_port_enabled_set(bt->statusbar_view_port, api_hal_bt_is_alive());
-        osDelay(1000);
+        osDelay(1024);
     }
 }