Add support for Windows (and MacOS)

[LucaCras]

Currently, no support is provided for printing from Windows (or macOS) devices to a Brother printer.

Proposal: Add support for printing from Windows (and macOS) devices.

Extra info: our use case involves a model QL-820NWB printer from Brother if that is helpful.

Thanks in advance!

[CodeMinion]

Hi @LucaCras !

Thanks for the great suggestion! I'll leave this open until we get some time to tackle it or someone from the community wants to wants to give it a shot.

Currently another_brother sits on top of the native SDKs from Brother which is great but also means adding support for a new platform entails bringing in that SDK and wiring things up. I have been hoping to write another_brother natively in Dart without any native SDK and thus get support for all Flutter platforms as they become available by default.

Thanks again,