[Feature request]: New device support

Is your feature request related to a problem? Please describe

I have 2 Moes roller blinds (model _TZE2841000000_u68q868h). I have another Moes roller blind (model _TZE284_qoi1aqxg) which I supect will work.

Describe the solution you'd like

Rather than having to create a whole new external converter from scratch it would be useful if I could use the Create External Converter from the working blind to generate a complete definition and then all I would need to do would be change the model code

Describe alternatives you've considered

Creating from scratch

Additional context

I keep on getting invalid as a file extension so trying to get an easier solution