feat(sync): use regclient for sync extension (#2903)

* feat(sync): use regclient for sync extension

replaced containers/image package with regclient/regclient package

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

* fix(sync): fixed converting innner docker list mediatype

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

* feat(sync): added option to preserve digest

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

* fix(sync): added coverage and various fixes

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

* fix(metadb): fixed converting manifest list not setting platform and annotations

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

* fix(sync): remove read lock on storage, not used concurrently

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

* feat(sync): added cache for repo tags

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

* fix(sync): fixed Makefile
removed opengpg tag

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

* fix(sync): add test for on demand referrer

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

---------

Signed-off-by: Eusebiu Petu <petu.eusebiu@gmail.com>

errors/errors.go

@@ -148,6 +148,7 @@ var (
 	ErrSyncPingRegistry               = errors.New("unable to ping any registry URLs")
 	ErrSyncImageNotSigned             = errors.New("synced image is not signed")
 	ErrSyncImageFilteredOut           = errors.New("image is filtered out by sync config")
+	ErrSyncParseRemoteRepo            = errors.New("failed to parse remote repo")
 	ErrInvalidTruststoreType          = errors.New("invalid signature truststore type")
 	ErrInvalidTruststoreName          = errors.New("invalid signature truststore name")
 	ErrInvalidCertificateContent      = errors.New("invalid signature certificate content")