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/maps/allies-07/map.ftl

@@ -0,0 +1,13 @@
+## rules.yaml
+briefing = 
+    LANDCOM 16 HQS.
+    TOP SECRET.
+    TO: FIELD COMMANDER A9
+    
+    INTERCEPTION OF SOVIET COMMUNIQUE INDICATES THAT THEIR IRON CURTAIN RESEARCH WAS SET BACK BY ESPIONAGE. EXCELLENT WORK, COMMANDER!
+    
+    COMMUNIQUE WAS TRACED BACK TO A SECRET SOVIET BASE IN BORNHOLM. INVESTIGATE POSSIBLE CONNECTION WITH IRON CURTAIN RESEARCH. CAPTURE RADAR CENTER AND DESTROY SUB PRODUCTION CAPABILITY.
+    
+    CONFIRMATION CODE 1138.
+    
+    TRANSMISSION ENDS.