Include binary w/ everything required to generate code for this binder

[andrew-j-roberts]

Generating Spring Cloud Stream code that leverages the Spring Cloud Stream Binder for Solace PubSub+ requires both @asyncapi/generator and @asyncapi/java-spring-cloud-stream-template packages.

It'd make it easier on systems teams if everything that was required to generate code was included in a single image and made available as a binary.

I've put together an example here that shows how to:

• build an image that includes both the generator and template,
• export the image to a .tar.gz
• attach the .tar.gz to a release's assets

I suggest that we host a binary of the generator + SCS template on this repository until the official AsyncAPI repositories decide to host the image(s) themselves, I've engaged some of the AsyncAPI contributors on Slack and raised an issue here.

[PhilippeKhalife]

@andrew-j-roberts - this is a great suggestion, but it does not belong to this repository. We suggest that you collaborate with our Dev. Advocate team on https://solace.community/ to raise this as an AsyncAPI feature.