[Feature Request] Allow specifying host as a header

[igorlfs]

Hello!

rest.nvim has a nice feature: it's possible to specify the host as if it were a header. They call that "URL without Host". For instance:

GET /api
HOST: example.com

It'd be nice to have that in kulala as well.

[Grueslayer]

@igorlfs I don‘t see any use case for this, please explain what advantage you see over putting the host directly to the request line or use variables like {host}/api and define @host somewhere.