improve goreleaser integration

[kamilsk]

• review the docs https://goreleaser.com
• add snapshot target, https://goreleaser.com/#.main_version.customization.project_name.builds.archive.checksum.snapshots
• configure fpm linux package, https://goreleaser.com/#.main_version.customization.project_name.builds.archive.checksum.snapshots.fpm_linux_packages
• configure snapcraft linux package, https://goreleaser.com/#.main_version.customization.project_name.builds.archive.checksum.snapshots.fpm_linux_packages.snapcraft_linux_packages
• docker build https://goreleaser.com/#.main_version.customization.project_name.builds.archive.checksum.snapshots.fpm_linux_packages.snapcraft_linux_packages.releasing.homebrew.docker