feat: perfect migrate to @vue/cli-service, upgrade vue babel version

1. update to @vue/cli-service@3.0.5, @babel/core@7.0.0
2. use vue-cli service replace config file in build/ and config/
3. upgrade vue and babel configuration
4. solve the svg-sprite config problem #980

refs: #932 #1087  #980 #1056

vue.config.js

@@ -0,0 +1,38 @@
+'use strict'
+require('@babel/register')
+const path = require('path')
+
+function resolve(dir) {
+  return path.join(__dirname, dir)
+}
+
+module.exports = {
+  devServer: {
+    open: true
+  },
+  configureWebpack: {
+    resolve: {
+      alias: {
+        '$@': resolve('src/components')
+      }
+    },
+    module: {
+      rules: [
+        {
+          test: /\.svg$/,
+          loader: 'svg-sprite-loader',
+          include: [resolve('src/icons')],
+          options: {
+            symbolId: 'icon-[name]'
+          }
+        }
+      ]
+    }
+  },
+  chainWebpack(config) {
+    config.module
+      .rule('svg')
+      .exclude.add(resolve('src/icons'))
+      .end()
+  }
+}