registration implemented

Main/models/set.py

@@ -0,0 +1,8 @@
+from django.contrib.auth.models import User
+from django.db import models
+
+
+class Set(models.Model):
+    name = models.TextField()
+    public = models.BooleanField(default=False)
+    creator = models.ForeignKey(User, on_delete=models.SET_NULL, null=True)