Releases should be built on GitHub #781
Description
Is your task related to a problem? Please describe.
Right now, every release of argocd-agent is being build locally (mainly by me, on my local workstation) and then pushed to GitHub. While lots of things scripted, some are not. This is error-prone (i.e. I forgot to upload the release CLIs as binaries to the release on GitHub).
Describe the solution you'd like
Releases should be built using GitHub actions, on GitHub hosted runners and created entirely within GitHub. Argo CD has a pretty great & proven release workflow, so we might piggyback on that.