Add legacy

InvenTree/plugin/plugin.py

@@ -7,6 +7,7 @@ import os
 import inspect
 from datetime import datetime
 import pathlib
+import warnings
 
 from django.conf import settings
 from django.db.utils import OperationalError, ProgrammingError
@@ -336,3 +337,11 @@ class InvenTreePlugin(MixinBase, InvenTreePluginBase):
         self.package = package
         self.sign_state = sign_state
     # endregion
+
+
+class IntegrationPluginBase(InvenTreePlugin):
+    def __init__(self, *args, **kwargs):
+        """Send warning about using this reference"""
+        # TODO remove in 0.8.0
+        warnings.warn("This import is deprecated - use InvenTreePlugin", DeprecationWarning)
+        super().__init__(*args, **kwargs)