Logic sensor (#10795)

* Add `selectedBlock` logic sensor

* Add `buildX`/`buildY`/`building` logic sensors

* Change `building` from boolean to the building

* `breaking`

* Make `breaking`/`building` more consistent

* Allow blocks/content to be null

* Change `selectedBlock` from air to null

* Change `selectedBlock` from air to null

* Make `selectedBlock` SyncLocal

* Add `selectedRotation`

core/src/mindustry/input/InputHandler.java

@@ -944,6 +944,9 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
             block = null;
         }
 
+        player.selectedBlock = block;
+        player.selectedRotation = rotation;
+
         wasShooting = player.shooting;
 
         //only reset the controlled type and control a unit after the timer runs out