Add KSP_VERSION_MAX to the version file

Author: MOARdV

GameData/DistantObject/DistantObject.version

@@ -17,5 +17,11 @@
   	"MAJOR": 1,
   	"MINOR": 3,
 	"PATCH": 0
+  },
+  "KSP_VERSION_MAX":
+  {
+    "MAJOR": 1,
+    "MINOR": 5,
+    "PATCH": 99
   }
 }