Extend gpredict by HTTP-based interface to rigs and rotators

[DL4OCE]

Hi, do you think that you'd like the idea of implementing the usage of a new Hamlib REST API wrapper that I wrote? You can access up to 99 + 99 devices and use a very simple access method: HTTP requests, i.e.

http://localhost:8080/api/v1/rotators/2/position

It's super wasy to install and blazingly fast!