Fastapi refactor update

app/services/abc/exam/grade.py

@@ -0,0 +1,13 @@
+from abc import ABC, abstractmethod
+from typing import Dict, List
+
+
+class IGradeService(ABC):
+
+    @abstractmethod
+    async def grade_short_answers(self, data: Dict):
+        pass
+
+    @abstractmethod
+    async def calculate_grading_summary(self, extracted_sections: List):
+        pass