add getAdminList method to user service

src/services/user.service.js

-// import { tokenHeader } from "@/utils/token-utils";
 import { tokenHeader } from "@/utils/token-utils";
 import axios from "axios";
 
@@ -16,6 +15,19 @@ class UserService {
       .catch((err) => console.error(err));
   }
 
+  async getAdminList() {
+    return await axios
+      .get(API_URL + "/communities/admin", {
+        headers: tokenHeader(),
+      })
+      .then((res) => {
+        return res.data;
+      })
+      .catch((err) => {
+        console.error(err);
+      });
+  }
+
   async getUserRatingAverage(userId) {
     return await axios
       .get(API_URL + "rating/" + userId + "/average", {