misc: extract Job.STATUS_CHOICES (#88641)

It will be used to generate the job's filter interface.

passerelle/base/models.py

@@ -820,6 +820,14 @@ class SkipJob(Exception):
 
 
 class Job(models.Model):
+    STATUS_CHOICES = [
+        ('registered', _('Registered')),
+        ('running', _('Running')),
+        ('failed', _('Failed')),
+        ('restarted', _('Failed and restarted')),
+        ('completed', _('Completed')),
+    ]
+
     resource_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
     resource_pk = models.PositiveIntegerField()
     resource = fields.GenericForeignKey('resource_type', 'resource_pk')
@@ -833,13 +841,7 @@ class Job(models.Model):
     status = models.CharField(
         max_length=20,
         default='registered',
-        choices=(
-            ('registered', _('Registered')),
-            ('running', _('Running')),
-            ('failed', _('Failed')),
-            ('restarted', _('Failed and restarted')),
-            ('completed', _('Completed')),
-        ),
+        choices=STATUS_CHOICES,
     )
     status_details = JSONField(default=dict)