[add] gogo benchmark

[7elven]

What changed

• Add a Go/gogo benchmark implementation for the required route contract:
  • GET / returns 200 with an empty body
  • GET /user/:id returns the route parameter
  • POST /user returns 200 with an empty body
• Register a gogo Go engine so the benchmark generator can select a framework-specific Dockerfile.
• Add a go/gogo.Dockerfile that enables cgo, installs native zlib build headers, builds with the gogo tag, and installs runtime libraries needed by the native binary.

Validation

• gofmt -w go/gogo/main.go
• git diff --cached --check
• ruby -ryaml -e 'ARGV.each { |f| YAML.safe_load(File.read(f)); puts "ok #{f}" }' go/config.yaml go/gogo/config.yaml
• CGO_ENABLED=1 go test -tags gogo ./... in the gogo source checkout
• CGO_ENABLED=1 go run -mod=mod -tags gogo . from go/gogo, then checked:
  • GET / -> 200, empty body
  • GET /user/0 -> 200, body 0
  • POST /user -> 200, empty body

Notes

I could not run bundle exec rake config or a Docker build locally because this machine only has macOS system Ruby 2.6 for the repo's Ruby 3+ rake code and does not have Docker installed. The PR is opened as a draft so CI can validate the generated Docker path before review.

[7elven]

url: https://github.com/Snocko-main/gogo