Add Docker /v2/_catalog endpoint (#20469)

* Added properties for packages.
* Fixed authenticate header format.
* Added _catalog endpoint.
* Check owner visibility.
* Extracted condition.
* Added test for _catalog.

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

routers/api/packages/api.go

@@ -257,6 +257,7 @@ func ContainerRoutes() *web.Route {
 
 	r.Get("", container.ReqContainerAccess, container.DetermineSupport)
 	r.Get("/token", container.Authenticate)
+	r.Get("/_catalog", container.ReqContainerAccess, container.GetRepositoryList)
 	r.Group("/{username}", func() {
 		r.Group("/{image}", func() {
 			r.Group("/blobs/uploads", func() {