rollup configuration customizing with vue.config.js

support like configureWebpack of vue.config.js: refs:

• https://cli.vuejs.org/guide/webpack.html#simple-configuration
• https://cli.vuejs.org/config/#configurewebpack

configureRollup

• Type: Object | Function

If the value is an Object, it will be merged into the final config

e.g.

const resolve = require('rollup-plugin-node-resolve')

module.exports = {
   pluginOptions: {
     p11n: {
       configureRollup: {
         plugins: [resolve({
           customResolveOptions: {
             moduleDirectory: 'node_modules'
           }
         })],
         external: ['lodash']
       }
     }
   }
}