add deployment user to limit deployment

deployment/migrations/0002_deploymentuser.py

@@ -0,0 +1,25 @@
+# Generated by Django 4.2.5 on 2023-09-23 14:21
+
+from django.conf import settings
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('deployment', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='DeploymentUser',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('credits', models.SmallIntegerField(default=1, help_text='number of deployment allowed (-1 infinite)', validators=[django.core.validators.MinValueValidator(-1, message='Value must be greater than or equal to -1')])),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]