feat: upload cosign public key and notation certificates to cloud (#1744)

- using secrets manager for storing public keys and certificates
- adding a default truststore for notation verification and upload all certificates to this default truststore
- removig `truststoreName` query param from notation api for uploading certificates


(cherry picked from commit eafcc1a213)

Signed-off-by: Andreea-Lupu <andreealupu1470@yahoo.com>

pkg/meta/types/types.go

@@ -121,6 +121,10 @@ type MetaDB interface { //nolint:interfacebloat
 		[]RepoMetadata, map[string]ManifestMetadata, map[string]IndexData, error)
 
 	PatchDB() error
+
+	ImageTrustStore() ImageTrustStore
+
+	SetImageTrustStore(imgTrustStore ImageTrustStore)
 }
 
 type UserDB interface { //nolint:interfacebloat
@@ -160,6 +164,13 @@ type UserDB interface { //nolint:interfacebloat
 	DeleteUserAPIKey(ctx context.Context, id string) error
 }
 
+type ImageTrustStore interface {
+	VerifySignature(
+		signatureType string, rawSignature []byte, sigKey string, manifestDigest godigest.Digest, manifestContent []byte,
+		repo string,
+	) (string, time.Time, bool, error)
+}
+
 type ManifestMetadata struct {
 	ManifestBlob  []byte
 	ConfigBlob    []byte