Go plugin guides

Select PROGRAMMING_LANGUAGE = "golang" for a Go project. The plugin uses GoReleaser for packaging and supports Go module discovery, documentation and dependency licence reporting.

• Go multi-module projects — Split a project into modules and prepare coordinated internal dependency versions for one CDS release.
• Automate releases — The shared release workflow.
• Generate code documentation — Generate Go API pages with doc2go.
• Generate an SPDX SBOM — Report Go dependency metadata.
• Go plugin reference — Go-specific prerequisites and configuration.