Add Go URL to dependency badge

[MichaelCurrin]

e.g.

https://pkg.go.dev/github.com/shurcooL/githubv4
https://pkg.go.dev/google.golang.org/api/transport/http
https://pkg.go.dev/net/http/httputil
https://pkg.go.dev/golang.org/x/oauth2

[MichaelCurrin]

New logic is needed to use the last part for the dependency name, or the last two parts, but exclude GitHub, even though it won't always be there

Sample

  it("returns a static badge for a Go package", () => {
    const imageTarget = "https://img.shields.io/badge/dependency-githubv4-blue";
    const linkTarget = "https://pkg.go.dev/github.com/shurcooL/githubv4";

    expect(dependency("githubv4", REGISTRY.Go, {})).toBe(
      `[![dependency - githubv4](${imageTarget})](${linkTarget})`
    );
  });

[MichaelCurrin]

This will be an extra option on the Packages screen and can use dependency function. Or a new function to keep that one light.