Brevo: SendinBlue compatibility

(See previous commit.)

- Maintain deprecated compatibility
  versions on the old names/URLs.
  (Split into separate commit
  to make renamed files more
  obvious.)

anymail/webhooks/sendinblue.py

@@ -0,0 +1,38 @@
+import warnings
+
+from ..exceptions import AnymailDeprecationWarning
+from .brevo import BrevoInboundWebhookView, BrevoTrackingWebhookView
+
+
+class SendinBlueTrackingWebhookView(BrevoTrackingWebhookView):
+    """
+    Deprecated compatibility tracking webhook for old Brevo name "SendinBlue".
+    """
+
+    esp_name = "SendinBlue"
+
+    def __init__(self, **kwargs):
+        warnings.warn(
+            "Anymail's SendinBlue webhook URLs are deprecated."
+            " Update your Brevo transactional email webhook URL to change"
+            " 'anymail/sendinblue' to 'anymail/brevo'.",
+            AnymailDeprecationWarning,
+        )
+        super().__init__(**kwargs)
+
+
+class SendinBlueInboundWebhookView(BrevoInboundWebhookView):
+    """
+    Deprecated compatibility inbound webhook for old Brevo name "SendinBlue".
+    """
+
+    esp_name = "SendinBlue"
+
+    def __init__(self, **kwargs):
+        warnings.warn(
+            "Anymail's SendinBlue webhook URLs are deprecated."
+            " Update your Brevo inbound webhook URL to change"
+            " 'anymail/sendinblue' to 'anymail/brevo'.",
+            AnymailDeprecationWarning,
+        )
+        super().__init__(**kwargs)