Hovering over blocks with a selection displays the selection (#10323)

* Selection display

Should this go in building or block?

* Apparently serpulo liquid icons are not square???

* simplify

* simplify further

* Add disabling w/ setting

Probably needs a better name

* Better name

* h

core/src/mindustry/ui/dialogs/SettingsMenuDialog.java

@@ -453,6 +453,7 @@ public class SettingsMenuDialog extends BaseDialog{
         graphics.checkPref("drawlight", true);
         graphics.checkPref("destroyedblocks", true);
         graphics.checkPref("blockstatus", false);
+        graphics.checkPref("displayselection", true);
         graphics.checkPref("playerchat", true);
         if(!mobile){
             graphics.checkPref("coreitems", true);