🧑‍💻 Migrate package.json prettier and eslint

Also updated the plugins and the config.
New rules should be respected from now-on

src/pages/_app.tsx

@@ -36,16 +36,9 @@ import '../styles/global.scss';
 import nextI18nextConfig from '../../next-i18next.config';
 import { api } from '~/utils/api';
 
-function App(
-  this: any,
-  props: AppProps<{
-    colorScheme: ColorScheme;
-    packageAttributes: ServerSidePackageAttributesType;
-    editModeEnabled: boolean;
-    defaultColorScheme: ColorScheme;
-  }>
-) {
+function App(props: AppProps & { colorScheme: ColorScheme }) {
   const { Component, pageProps } = props;
+
   const [primaryColor, setPrimaryColor] = useState<MantineTheme['primaryColor']>('red');
   const [secondaryColor, setSecondaryColor] = useState<MantineTheme['primaryColor']>('orange');
   const [primaryShade, setPrimaryShade] = useState<MantineTheme['primaryShade']>(6);