Dependency inversion for s3 service

internal/contract/contract.go

@@ -3,6 +3,11 @@ package contract
 type ObjectStorage interface {
 }
 
+type YandexS3Uploader interface {
+	UploadFile(filePath, fileName string) error
+	FileUrl(fileName string) string
+}
+
 type AudioFileConverter interface {
 	Convert(src, dest string) error
 }