✨(webhook) add webhook logic and synchronization utils

adding webhooks logic to send serialized team memberships data
to a designated serie of webhooks.

src/backend/core/enums.py

@@ -3,6 +3,7 @@ Core application enums declaration
 """
 
 from django.conf import global_settings, settings
+from django.db import models
 from django.utils.translation import gettext_lazy as _
 
 # Django sets `LANGUAGES` by default with all supported languages. We can use it for
@@ -14,3 +15,11 @@ ALL_LANGUAGES = getattr(
     "ALL_LANGUAGES",
     [(language, _(name)) for language, name in global_settings.LANGUAGES],
 )
+
+
+class WebhookStatusChoices(models.TextChoices):
+    """Defines the possible statuses in which a webhook can be."""
+
+    FAILURE = "failure", _("Failure")
+    PENDING = "pending", _("Pending")
+    SUCCESS = "success", _("Success")