CI-850: Define method to return generic BytesIO object for DataPortalFile (#177)

* Define method to return generic BytesIO object for DataPortalFile

* Fix linting issue by adding extra blank line before class definition

* Rename method to read_bytes and move it to be under read method

Author: malnasleh

cirro/sdk/file.py

@@ -174,6 +174,10 @@ def read(self, encoding='utf-8', compression=None) -> str:
             ) as handle:
                 return handle.read()
 
+    def read_bytes(self) -> BytesIO:
+        """Get a generic BytesIO object representing the Data Portal File, to be passed into readers."""
+        return BytesIO(self._get())
+
     def download(self, download_location: str = None):
         """Download the file to a local directory."""