chore: Fix Tailwind v3 installation

Author: bmulholland

assets/css/main.css

@@ -0,0 +1,3 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;

src/renderer/index.tsx

@@ -1,7 +1,7 @@
 import { createRoot } from 'react-dom/client';
 
 import 'nprogress/nprogress.css';
-import 'tailwindcss/tailwind.css';
+import '../../assets/css/main.css';
 import { App } from './App';
 
 const container = document.getElementById('root');