replace ElementPlus to PrimeVue, update TheWelcome

vite.config.ts

@@ -3,19 +3,24 @@ import { fileURLToPath, URL } from 'node:url'
 import { defineConfig } from 'vite'
 import vue from '@vitejs/plugin-vue'
 import vueDevTools from 'vite-plugin-vue-devtools'
+import Components from 'unplugin-vue-components/vite'
+import { PrimeVueResolver } from '@primevue/auto-import-resolver'
 
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [
     vue(),
+    Components({
+      resolvers: [PrimeVueResolver()],
+    }),
     vueDevTools(),
   ],
   define: {
-    global: 'window' // it is needed for PouchDB
+    global: 'window', // it is needed for PouchDB
   },
   resolve: {
     alias: {
-      '@': fileURLToPath(new URL('./src', import.meta.url))
+      '@': fileURLToPath(new URL('./src', import.meta.url)),
     },
   },
 })