matchmaking rework for multiples game modes

src/shared_js/enums.ts

@@ -37,4 +37,10 @@ enum ClientRole {
 	spectator
 }
 
-export {EventTypes, InputEnum, PlayerSide, ClientRole}
+enum MatchOptions {
+	// binary flags, can be mixed
+	noOption = 0b0,
+	multiBalls = 1 << 0
+}
+
+export {EventTypes, InputEnum, PlayerSide, ClientRole, MatchOptions}