add userfile module

backend/files/migrations/0001_initial.py

@@ -0,0 +1,26 @@
+# Generated by Django 4.2.2 on 2023-07-01 18:22
+
+from django.db import migrations, models
+import files.models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='File',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('file', models.FileField(unique=True, upload_to=files.models.hash_upload)),
+                ('mime_type', models.CharField(max_length=255)),
+                ('hash', models.CharField(max_length=64, unique=True)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+            ],
+        ),
+    ]