Map search (#6004)

* Map search

* Fix format

* check and continue

* icons and style

* grow pane so search bar doesnt move

* Inline focusing

* Use boolean instead of checking size

core/assets/bundles/bundle.properties

@@ -379,6 +379,9 @@ editor.ingame = Edit In-Game
 editor.publish.workshop = Publish On Workshop
 editor.newmap = New Map
 editor.center = Center
+editor.search = Search Maps...
+editor.filters = Filter Maps
+editor.showAll = Show Default Maps
 workshop = Workshop
 waves.title = Waves
 waves.remove = Remove