How to embed Cordova in an existing Swift app

[brody4hire]

I think this documentation should be added somewhere around here (updated): https://cordova.apache.org/docs/en/latest/guide/platforms/ios/webview.html

with source here (updated): https://cordova.apache.org/docs/en/latest/guide/platforms/ios/webview.html

triggered by: https://github.com/apache/cordova/issues/177

also related: #875 - document Embed Cordova in native apps android webview ant jar deprecated