Rika FireNet support

Hi everyone,

With https://github.com/Fockaert/rika-firenet-custom-component/issues/7 I’ve added support for switch and number entities. But the number entity (https://developers.home-assistant.io/docs/core/entity/number) I’ve issues testing this. I need to find a way for adding a slider on dashboard for updating the value, who can help me with this? If needed I can merge this branch to master if it’s easier testing.

Thanks,
Jan