feat: LEAP-1601: Add custom_task_lock_ttl field (#6572)

Co-authored-by: triklozoid <triklozoid@users.noreply.github.com>

label_studio/projects/migrations/0027_project_custom_task_lock_ttl.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.16 on 2024-10-29 15:11
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('projects', '0026_auto_20231103_0020'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='project',
+            name='custom_task_lock_ttl',
+            field=models.IntegerField(default=None, help_text='Custom task lock TTL in seconds. If not set, the default value is used', null=True, verbose_name='custom_task_lock_ttl'),
+        ),
+    ]

label_studio/projects/models.py

@@ -273,6 +273,13 @@ class SkipQueue(models.TextChoices):
 
     pinned_at = models.DateTimeField(_('pinned at'), null=True, default=None, help_text='Pinned date and time')
 
+    custom_task_lock_ttl = models.IntegerField(
+        _('custom_task_lock_ttl'),
+        null=True,
+        default=None,
+        help_text='Custom task lock TTL in seconds. If not set, the default value is used',
+    )
+
     def __init__(self, *args, **kwargs):
         super(Project, self).__init__(*args, **kwargs)
         self.__original_label_config = self.label_config