add student dataclass

app/util/courses.py

@@ -1,8 +1,15 @@
 #!/usr/bin/env python3.11
 import json
 import csv
+from dataclasses import dataclass
 from app.util.estimateGrade import getGrade
 
+@dataclass
+class Request:
+  CrsNo:       str
+  Description: str
+  Alt:         bool
+
 # Get all requested courses from data
 def getCourses(
   data_dir: str,