feat(web,server): link/unlink oauth account (#1154)

* feat(web,server): link/unlink oauth account

* chore: linting

* fix: broken oauth callback

* fix: user core bugs

* fix: tests

* fix: use user response

* chore: update docs

* feat: prevent the same oauth account from being linked twice

* chore: mock logger

web/src/lib/utils/handle-error.ts

@@ -0,0 +1,13 @@
+import { ApiError } from '../../api';
+import {
+	notificationController,
+	NotificationType
+} from '../components/shared-components/notification/notification';
+
+export function handleError(error: unknown, message: string) {
+	console.error(`[handleError]: ${message}`, error);
+	notificationController.show({
+		message: (error as ApiError)?.response?.data?.message || message,
+		type: NotificationType.Error
+	});
+}