feat: upgrade prettier to v3

frontend/app/prettier.config.mjs

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2022 StApps
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+import prettierConfig from '@openstapps/prettier-config';
+
+/** @type {import('prettier').Config} */
+const config = {
+  ...prettierConfig,
+  overrides: [
+    {
+      files: 'src/**/*.html',
+      options: {
+        parser: 'angular',
+      },
+    },
+  ],
+  ignorePath: ['.prettierignore', '../../.gitignore'],
+};
+
+export default config;