add pos sale type to quota

apps/product/models.py

@@ -394,6 +394,12 @@ class Quota(BaseModel):
     limit_by_herd_size = models.BooleanField(default=True)
     is_closed = models.BooleanField(default=False)
     closed_at = models.DateTimeField(null=True, blank=True)
+    pos_sale_type_choices = (
+        ('weight', 'WEIGHT'),
+        ('count', 'COUNT'),
+        ('all', 'ALL'),
+    )
+    pos_sale_type = models.CharField(choices=pos_sale_type_choices, max_length=25, default='all')
 
     def __str__(self):
         return f"Quota ({self.id}) for {self.product.name}"