feat: preliminary completion of index page and post page

Signed-off-by: Ryan Wang <i@ryanc.cc>

vite.config.ts

@@ -1,8 +1,10 @@
 import { defineConfig } from "vite";
 import { fileURLToPath } from "url";
 import path from "path";
+import PurgeIcons from "vite-plugin-purge-icons";
 
 export default defineConfig({
+  plugins: [PurgeIcons()],
   build: {
     outDir: fileURLToPath(new URL("./templates/assets/dist", import.meta.url)),
     emptyOutDir: true,