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/cnc/maps/gdi08a/map.ftl

@@ -0,0 +1,7 @@
+## rules.yaml
+briefing = 
+    UN Sanctions have cut funding to the Global Defense Initiative, leaving field units helpless.
+    
+    Use the repair facility to keep your units in the field long enough to destroy the Nod base in the region.
+    
+    All Nod units and structures must be destroyed.