Add link to gitlab login in frontend

frontend/src/views/LoginView.vue

@@ -54,6 +54,7 @@ async function login() {
 		<input type="text" placeholder="Code" v-model="otp" />
 	</template>
 	<button @click="login()">Login</button>
+	<a href="/api/auth/gitlab">Login with gitlab</a>
 	<router-link to="signup">Signup instead?</router-link>
 </template>