feat(artifact): add OCI references support (#936)

Thanks @jdolitsky et al for kicking off these changes at:
https://github.com/oci-playground/zot/commits/main

Thanks @sudo-bmitch for reviewing the patch

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

pkg/debug/swagger/swagger_disabled.go

@@ -19,6 +19,6 @@ import (
 func SetupSwaggerRoutes(conf *config.Config, router *mux.Router, log log.Logger,
 ) {
 	// swagger swagger "/swagger/v2/index.html"
-	log.Warn().Msg("skipping enabling swagger because given zot binary" +
+	log.Warn().Msg("skipping enabling swagger because given zot binary " +
 		"doesn't include this feature, please build a binary that does so")
 }