Brushed up the backend, added writing task 1 academic prompt gen and grading ENCOA-274

ielts_be/dtos/writing.py

@@ -0,0 +1,13 @@
+from typing import Optional
+
+from pydantic import BaseModel
+
+
+class WritingGradeTaskDTO(BaseModel):
+    userId: str
+    sessionId: str
+    exerciseId: str
+    question: str
+    answer: str
+    type: str
+    attachment: Optional[str]