added basic support for files

cookbook/migrations/0131_auto_20210608_1929.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.2.4 on 2021-06-08 17:29
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cookbook', '0130_alter_userfile_file_size_kb'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='step',
+            name='file',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, to='cookbook.userfile'),
+        ),
+        migrations.AlterField(
+            model_name='step',
+            name='type',
+            field=models.CharField(choices=[('TEXT', 'Text'), ('TIME', 'Time'), ('FILE', 'File')], default='TEXT', max_length=16),
+        ),
+    ]