Migrate from Create React App to Vite; update docs and configs

vite.config.ts

@@ -0,0 +1,14 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+	plugins: [react()],
+	server: {
+		port: 3000,
+		host: true,
+	},
+	preview: {
+		port: 3000,
+		host: true,
+	},
+});