Allow SWA to work locally with custom host and HTTPS

[JeffEmery]

We would like to be able to run SWA locally from a custom host with HTTPS. e.g. https://app.hostname.dev:4280 to dev server at https://app.hostname.dev:3000

See https://github.com/JeffEmery/swa-ssl for a complete repo demonstrating the problem. You will have to create a self-signed certificate for the host.

When the dev server is configured with a custom host and HTTPS, SWA should also be configurable to use a custom host and HTTPS.

I haven't found any work arounds.