Add Linter / Analyzer

[albertocavalcante]

Enable nogo and possibly golangci-lint:

• https://github.com/bazelbuild/rules_go/blob/master/go/nogo.rst
• https://github.com/bazelbuild/rules_go/blob/master/go/nogo.rst#should-i-use-nogo-or-golangci-lint
• gvisor :: Extended "nogo" analysis

Sourcegraph

• context:global repo:has.path(WORKSPACE|MODULE.) repo:has.path(BUILD.) -file:vendor/* -lang:Markdown golangci-lint

[albertocavalcante]

Initial work: #14