Add support for Vagrant packages (#20930)

* Add support for Vagrant boxes.

* Add authentication.

* Add tests.

* Add integration tests.

* Add docs.

* Add icons.

* Update routers/api/packages/api.go

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: 6543 <6543@obermui.de>

models/packages/package.go

@@ -42,6 +42,7 @@ const (
 	TypePub       Type = "pub"
 	TypePyPI      Type = "pypi"
 	TypeRubyGems  Type = "rubygems"
+	TypeVagrant   Type = "vagrant"
 )
 
 // Name gets the name of the package type
@@ -69,6 +70,8 @@ func (pt Type) Name() string {
 		return "PyPI"
 	case TypeRubyGems:
 		return "RubyGems"
+	case TypeVagrant:
+		return "Vagrant"
 	}
 	panic(fmt.Sprintf("unknown package type: %s", string(pt)))
 }
@@ -98,6 +101,8 @@ func (pt Type) SVGName() string {
 		return "gitea-python"
 	case TypeRubyGems:
 		return "gitea-rubygems"
+	case TypeVagrant:
+		return "gitea-vagrant"
 	}
 	panic(fmt.Sprintf("unknown package type: %s", string(pt)))
 }