refactor: reorganize api utility structure into subdirectories

src/utils/api/akEndfield/index.ts

@@ -0,0 +1,15 @@
+import accountService from './accountService.js';
+import binding from './binding.js';
+import launcher from './launcher.js';
+import launcherWeb from './launcherWeb.js';
+import u8 from './u8.js';
+import webview from './webview.js';
+
+export default {
+  accountService,
+  binding,
+  launcher,
+  launcherWeb,
+  u8,
+  webview,
+};