injecting into table, created table header, and buttons for each row

src/shared/types/Course.ts

@@ -0,0 +1,17 @@
+import { Serialized } from 'chrome-extension-toolkit';
+
+type CourseSchedule = {};
+
+export class Course {
+    id: number;
+    name: string;
+    professor: string;
+    schedule: CourseSchedule;
+    currentStatus: string;
+    url: string;
+    registerURL?: string;
+
+    constructor(course: Course | Serialized<Course>) {
+        Object.assign(this, course);
+    }
+}