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/logic/LAccess.java

@@ -51,6 +51,10 @@ public enum LAccess{
     mineX,
     mineY,
     mining,
+    buildX,
+    buildY,
+    building,
+    breaking,
     speed,
     team,
     type,
@@ -64,6 +68,8 @@ public enum LAccess{
     payloadCapacity,
     maxUnits,
     id,
+    selectedBlock,
+    selectedRotation,
 
     //values with parameters are considered controllable
     enabled("to"), //"to" is standard for single parameter access