feat(wip): GameUnitConstraint 개념 추가

hwe/sammo/GameUnitConstraintHelper.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace sammo;
+
+class GameUnitConstraintHelper {
+
+    static function ReqTech(int $reqTech): array {
+        return [__FUNCTION__, $reqTech];
+    }
+
+    static function ReqCities(array $reqCities): array {
+        return [__FUNCTION__, $reqCities];
+    }
+
+    static function ReqRegions(array $reqRegions): array {
+        return [__FUNCTION__, $reqRegions];
+    }
+
+    static function ReqMinYear(int $reqMinYear): array {
+        return [__FUNCTION__, $reqMinYear];
+    }
+}
+
+namespace sammo\Constraint;
+
+