[WEB-3065] refactor: replace admin services with service packages (#6342)

* [WEB-3065] refactor: replace admin services with service packages

* chore: minor updates

* chore: error handling

packages/services/src/user/favorite.service.ts

@@ -1,6 +1,6 @@
 import { API_BASE_URL } from "@plane/constants";
 import type { IFavorite } from "@plane/types";
-import { APIService } from "@/api.service";
+import { APIService } from "../api.service";
 
 /**
  * Service class for managing user favorites

packages/services/src/user/index.ts

@@ -1 +1,2 @@
 export * from "./favorite.service";
+export * from "./user.service";

packages/services/src/user/user.service.ts

@@ -0,0 +1,33 @@
+// plane imports
+import { API_BASE_URL } from "@plane/constants";
+import type { IUser } from "@plane/types";
+// api service
+import { APIService } from "../api.service";
+
+/**
+ * Service class for managing user operations
+ * Handles operations for retrieving the current user's details and perform CRUD operations
+ * @extends {APIService}
+ */
+export class UserService extends APIService {
+  /**
+   * Constructor for UserService
+   * @param BASE_URL - Base URL for API requests
+   */
+  constructor(BASE_URL?: string) {
+    super(BASE_URL || API_BASE_URL);
+  }
+
+  /**
+   * Retrieves the current instance admin details
+   * @returns {Promise<IUser>} Promise resolving to the current instance admin details
+   * @throws {Error} If the API request fails
+   */
+  async adminDetails(): Promise<IUser> {
+    return this.get("/api/instances/admins/me/")
+      .then((response) => response?.data)
+      .catch((error) => {
+        throw error?.response?.data;
+      });
+  }
+}