Update go.mod and to rename package to github.com/streamdal/plumber so that build time version injection works
Update CI process to populate version.txt with the version tag and short SHA so that running make build locally will inject the correct version and sha
Fix for #363
github.com/streamdal/plumberso that build time version injection worksversion.txtwith the version tag and short SHA so that runningmake buildlocally will inject the correct version and sha