Add Tool GUI Locale (#21)

* Update gui.cfg

* Update gui.cfg

* Update gui.cfg

* Update gui.cfg

* Fix use of created_entity in events

* Remove redundant keys

---------

Co-authored-by: Cooldude2606 <25043174+Cooldude2606@users.noreply.github.com>

exp_legacy/module/locale/en/gui.cfg

@@ -339,3 +339,17 @@ main-tooltip=Research GUI
 [server-ups]
 description=Toggle the server UPS display.
 no-ext=No external source was found, cannot display server ups.
+
+[tool]
+main-tooltip=Tool
+apply=Apply
+artillery=Artillery
+artillery-tooltip=Artillery Target Remote
+waterfill=Waterfill
+waterfill-tooltip=Change tile to water
+train=Train
+train-tooltip=Set All Trains to Automatic
+research=ARES
+research-tooltip=Automatically queue up research
+spawn=Teleport spawn
+spawn-tooltip=Teleport to spawn