Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mods/ra/hotkeys.yaml

@@ -0,0 +1,34 @@
+ProductionTypeBuilding: E
+	Description: hotkey-description-productiontypebuilding
+	Types: Production
+	Contexts: player
+
+ProductionTypeDefense: R
+	Description: hotkey-description-productiontypedefense
+	Types: Production
+	Contexts: player
+
+ProductionTypeInfantry: T
+	Description: hotkey-description-productiontypeinfantry
+	Types: Production
+	Contexts: player
+
+ProductionTypeVehicle: Y
+	Description: hotkey-description-productiontypevehicle
+	Types: Production
+	Contexts: player
+
+ProductionTypeAircraft: U
+	Description: hotkey-description-productiontypeaircraft
+	Types: Production
+	Contexts: player
+
+ProductionTypeNaval: I
+	Description: hotkey-description-productiontypenaval
+	Types: Production
+	Contexts: player
+
+PowerDown: X
+	Description: hotkey-description-powerdown
+	Types: OrderGenerator
+	Contexts: player