Adding MT Sample clinical note dataset (#804)

* Adding clinical note dataset

* Fix flake8 issues

* Fix prepare.py for straggling commas, replace assistant with Rosey in prompt

Co-authored-by: Yada P <yadapruk@Tests-MacBook-Pro.local>

openassistant/datasets/mt_note_generation/hub.py

@@ -0,0 +1,21 @@
+from dataclasses import dataclass
+
+import datasets
+
+
+@dataclass
+class OpenAssistantConfig(datasets.BuilderConfig):
+    """BuilderConfig for OpenAssistant datasets."""
+
+    name: str = None
+    version: datasets.Version = None
+    description: str = None
+    schema: str = None
+    subset_id: str = None
+
+
+features = datasets.Features(
+    {
+        "conversation": datasets.Value("string"),
+    }
+)