[webapps] Azure Web Apps samples

Hi, everyone!
I'm starting to look at adding the web apps examples and I'm trying to understand what the most important operations would be, as [the operation list for web apps is quite long](https://docs.microsoft.com/en-us/rest/api/appservice/webapps).

Besides the usual create, list, delete operations, which ones do you think should be part of the samples (like creating a deployment slot, starting, stopping, swapping slots...)

Thanks,
Radu M