Add PlacementMap, stubs: PlacementMapMgr and PlacementMapMgrMapArray

src/KingSystem/Map/mapPlacementMap.cpp

@@ -0,0 +1,15 @@
+#include "KingSystem/Map/mapPlacementMap.h"
+
+namespace ksys::map {
+
+SEAD_SINGLETON_DISPOSER_IMPL(PlacementMapMgr)
+
+void PlacementMapMgr::junk() {
+    /*  Here to force the compiler to include PlacementMap */
+    PlacementMap x;
+    auto y = new PlacementMap;
+    (void)(x);
+    (void)(y);
+}
+
+}  // namespace ksys::map