Added vue-loader-v16

[aosyatnik]

Hi, I was getting the next error, when running npm run serve:

 INFO  Starting development server...
 ERROR  Error: Cannot find module 'vue-loader-v16/package.json'
Error: Cannot find module 'vue-loader-v16/package.json'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:580:15)
    at Function.Module._load (internal/modules/cjs/loader.js:506:25)
    at Module.require (internal/modules/cjs/loader.js:636:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at api.chainWebpack.webpackConfig (C:\Projects\vue-crash-2021\node_modules\@vue\cli-service\lib\config\base.js:114:23)
    at webpackChainFns.forEach.fn (C:\Projects\vue-crash-2021\node_modules\@vue\cli-service\lib\Service.js:236:40)
    at Array.forEach (<anonymous>)
    at Service.resolveWebpackConfig (C:\Projects\vue-crash-2021\node_modules\@vue\cli-service\lib\Service.js:240:48)
    at PluginAPI.resolveWebpackConfig (C:\Projects\vue-crash-2021\node_modules\@vue\cli-service\lib\PluginAPI.js:132:25)
npm ERR! code ELIFECYCLE

I added vue-loader-v16 to package.json. It also regenerated package-lock.json (not sure if I needed to push it, but I still pushed). Now the server is running fine.