Inject build version via GoReleaser ldflags

[rogeralsing]

Summary

• pull in the --version resolver/tests from Add --version output #7 so main.version exists for ldflags
• inject the release tag into main.version via GoReleaser

Testing

• go test ./...

Notes

• includes Add --version output #7; that PR can be closed once this lands

[rogeralsing]

Progress update:

• cherry-picked Add --version output #7 version resolver/ flag so ldflags have a target
• updated to inject tag into
• ran ok github.com/asynkron/Asynkron.QuickDup/cmd/quickdup (cached)

[rogeralsing]

Progress update:

• cherry-picked Add --version output #7 version resolver/--version flag so ldflags have a target
• updated .goreleaser.yaml to inject tag into main.version
• ran go test ./...