[formatting] add newline to file(s) (#1508)

* Trail appropriate files with a new line

* For some ironic reason it ignored itself

Probably because it wasn’t tracked/commited yet.

* Rename newlines to server executable naming pattern

core/src/mindustry/world/blocks/Floor.java

@@ -221,4 +221,4 @@ public class Floor extends Block{
         return block.edges()[x][2 - y];
     }
 
-}
+}

core/src/mindustry/world/blocks/distribution/Conveyor.java

@@ -379,4 +379,4 @@ public class Conveyor extends Block implements Autotiler{
             }
         }
     }
-}
+}

core/src/mindustry/world/meta/values/FloorValue.java

@@ -18,4 +18,4 @@ public class FloorValue implements StatValue{
         table.add(new Image(floor.icon(Cicon.small))).padRight(3);
         table.add(floor.localizedName).padRight(3);
     }
-}
+}