Implement the read_object() function inside connection class for Azure. The SDK should utilise downloadTo() which should read the file at the offset and place it into the buffer and return it back to the caller. It is expected that the file already exists inside the cloud storage at this point. Once implemented the developer will also need to test this functionality via python testing and unit testing.

reference: https://azuresdkdocs.blob.core.windows.net/$web/cpp/azure-storage-blobs/12.0.0/class_azure_1_1_storage_1_1_blobs_1_1_blob_client.html#aa0bcbdbf6ebd17e4888cced4736420f7

Definition of Done
read_object() function is completed with added unit test and python testing.