feat：添加管理员登录

src/api/index.ts

@@ -0,0 +1,9 @@
+export { API_V1_PREFIX } from "@/api/paths";
+export { getAdminCaptcha, postAdminLogin } from "@/api/admin-auth";
+export { getAdminPing } from "@/api/admin-ping";
+export type {
+  AdminAuthCaptchaResponse,
+  AdminAuthLoginRequest,
+  AdminAuthLoginResponse,
+  AdminPingResponse,
+} from "@/types/api";