Add order and score for course problems (#124)

* Add order and grade for course problems

* Fix delete problems bug

judge/migrations/0192_course_lesson_problem.py

@@ -0,0 +1,44 @@
+# Generated by Django 3.2.21 on 2024-09-02 05:28
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("judge", "0191_deprecate_old_org_image"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="CourseLessonProblem",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("order", models.IntegerField(default=0, verbose_name="order")),
+                ("score", models.IntegerField(default=0, verbose_name="score")),
+                (
+                    "lesson",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="lesson_problems",
+                        to="judge.courselesson",
+                    ),
+                ),
+                (
+                    "problem",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE, to="judge.problem"
+                    ),
+                ),
+            ],
+        ),
+    ]