build(vite): replace webpack with Vite, add Typescript (#1594)

BREAKING: mixins are no longer exported from the index (and will likely be converted to hooks)

docs/.vuepress/config.js

@@ -2,6 +2,7 @@ const { description } = require('./config/meta')
 const head = require('./config/head')
 const plugins = require('./config/plugins')
 const themeConfig = require('./config/themeConfig')
+const { resolve } = require('path')
 
 module.exports = {
   title: 'Vue Select',
@@ -9,4 +10,11 @@ module.exports = {
   head,
   plugins,
   themeConfig,
+  configureWebpack: {
+    resolve: {
+      alias: {
+        '@': resolve(__dirname, '../../src'),
+      },
+    },
+  },
 }