Create binaries on each release

[willfurnell]

This pull request adds functionality, using 'goreleaser', to build binaries on each release.

resolves #86

[abhinavDhulipala]

We might also want to consider making this action dependent on the testing stage of our pipeline. All though it could also be argued that it is safe to assume the code at the tag would be working, I would still put the clause in just to be sure. Our pre-commit and tests are fast anyway.

[willfurnell]

Annoyingly making it dependent on the testing stage of the pipeline looks difficult - because you can do it, but then it will run every time the verify/testing action runs - and we don't want to be building binaries for every commit, I think? https://docs.github.com/en/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows#workflow_run
Up to you though as it's your project! :)

[abhinavDhulipala]

Looks great! I'll create a new micro release in the next couple days to test this out.