feat: add new files and configurations for SvelteKit project

apps/web/postcss.config.cjs

@@ -0,0 +1,13 @@
+const tailwindcss = require("tailwindcss");
+const autoprefixer = require("autoprefixer");
+
+const config = {
+  plugins: [
+    //Some plugins, like tailwindcss/nesting, need to run before Tailwind,
+    tailwindcss(),
+    //But others, like autoprefixer, need to run after,
+    autoprefixer
+  ]
+};
+
+module.exports = config;