HRU 300 RFCommands instead of virtual remote

[soundprojects]

Is your feature request related to a problem? Please describe:

The HRU 300 needs the C1101 RF module to control this unit. This is supported in the api using the rfcommand= url instead of using the virtual remote. The hru 300 therefore cannot be controlled by this plugin right now

Describe the solution you'd like:

An extra checkbox for the HRU 300 which sets the plugin to use RF commands instead of the virtual remote

Describe alternatives you've considered:

An alternative is a I2C implementation for this device which has been discussed in forum topics but is still wip right now

Additional context:

This device can only be controlled with RF Commands for the time being