Add country field in registration

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

participation/migrations/0014_alter_team_trigram.py

@@ -0,0 +1,31 @@
+# Generated by Django 5.0.6 on 2024-06-07 12:46
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("participation", "0013_alter_pool_options_pool_room"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="team",
+            name="trigram",
+            field=models.CharField(
+                help_text="The code must be composed of 3 uppercase letters.",
+                max_length=3,
+                unique=True,
+                validators=[
+                    django.core.validators.RegexValidator("^[A-Z]{3}$"),
+                    django.core.validators.RegexValidator(
+                        "^(?!BIT$|CNO$|CRO$|CUL$|FTG$|FCK$|FUC$|FUK$|FYS$|HIV$|IST$|MST$|KKK$|KYS$|SEX$)",
+                        message="This team code is forbidden.",
+                    ),
+                ],
+                verbose_name="code",
+            ),
+        ),
+    ]