added loadPage Api call

front/src/Api/Events/LoadPageEvent.ts

@@ -0,0 +1,13 @@
+import * as tg from "generic-type-guard";
+
+
+
+export const isLoadPageEvent =
+    new tg.IsInterface().withProperties({
+        url: tg.isString,
+    }).get();
+
+/**
+ * A message sent from the iFrame to the game to add a message in the chat.
+ */
+export type LoadPageEvent = tg.GuardedType<typeof isLoadPageEvent>;