feat(roster): implement class roster management and submission validation

src/types/index.ts

@@ -13,6 +13,15 @@ export type Classroom = {
   teacherId: string;
 };
 
+export type ClassroomStudent = {
+  id: number;
+  classroomId: number;
+  studentId: string;
+  studentName: string;
+  createdAt?: string;
+  updatedAt?: string;
+};
+
 export type Assignment = {
   id: number;
   title: string;