Add some elsewhere analyzed protocols

Hi,

I have a canvas remote, a ceiling fan and a few door bells (1). First two are supported by RFHEM already and the third can at least be rang - could someone please help me to convert this to OpenMQTTGateway (rcswitch)?

(1): h ttps://github.com/RFD-FHEM/RFFHEM/issues/946#issuecomment-863795361