Move all integration queries/mutations to hooks

frontend/src/pages/integrations/heroku/oauth2/callback.tsx

@@ -2,10 +2,13 @@ import { useEffect } from "react";
 import { useRouter } from "next/router";
 import queryString from "query-string";
 
-import AuthorizeIntegration from "../../../api/integrations/authorizeIntegration";
+import {
+  useAuthorizeIntegration
+} from "@app/hooks/api";
 
 export default function HerokuOAuth2CallbackPage() {
   const router = useRouter();
+  const { mutateAsync } = useAuthorizeIntegration();
 
   const { code, state } = queryString.parse(router.asPath.split("?")[1]);
 
@@ -15,7 +18,7 @@ export default function HerokuOAuth2CallbackPage() {
         // validate state
         if (state !== localStorage.getItem("latestCSRFToken")) return;
         localStorage.removeItem("latestCSRFToken");
-        const integrationAuth = await AuthorizeIntegration({
+        const integrationAuth = await mutateAsync({
           workspaceId: localStorage.getItem("projectData.id") as string,
           code: code as string,
           integration: "heroku"