add new command cp.

mdrsclient/commands/__init__.py

@@ -1,5 +1,6 @@
 from mdrsclient.commands.chacl import ChaclCommand
 from mdrsclient.commands.config import ConfigCommand
+from mdrsclient.commands.cp import CpCommand
 from mdrsclient.commands.download import DownloadCommand
 from mdrsclient.commands.file_metadata import FileMetadataCommand
 from mdrsclient.commands.labs import LabsCommand
@@ -16,6 +17,7 @@ from mdrsclient.commands.whoami import WhoamiCommand
 __all__ = [
     "ConfigCommand",
     "ChaclCommand",
+    "CpCommand",
     "DownloadCommand",
     "FileMetadataCommand",
     "LabsCommand",