Publish built binaries to github releases

[anuraaga]

It's great to see this plugin for polyglot environments that compile protos directly. I don't use buf so currently it seems tricky to use the compiler (need to install rust and then build the crate). If precompiled binaries could be published to the github releases for popular platforms (maybe darwin/linux/windows amd64/arm64), that would make it much simpler to use this plugin with protoc.

[neoeinstein]

I think that would be great to get set up. I haven't had the time just yet to set up a full pipeline for all architectures, but I'll look at getting something prepared and see if I can start doing some proper releases.