Complete runtime API implementation

test/login/he.ts

@@ -0,0 +1,7 @@
+import type { MessageKey_defaultSet } from "keycloakify/login/i18n";
+
+/* spell-checker: disable */
+const messages: Record<MessageKey_defaultSet, string> = null as any;
+/* spell-checker: enable */
+
+export default messages;