move invenTreePlugin to new class

to enable depreceation

InvenTree/plugin/plugin.py

@@ -2,14 +2,16 @@
 """
 Base Class for InvenTree plugins
 """
+import warnings
 
 from django.db.utils import OperationalError, ProgrammingError
 from django.utils.text import slugify
 
 
-class AAInvenTreePlugin():
+class InvenTreePluginBase():
     """
     Base class for a plugin
+    DO NOT USE THIS DIRECTLY, USE plugin.IntegrationPluginBase
     """
 
     def __init__(self):
@@ -82,3 +84,13 @@ class AAInvenTreePlugin():
             return cfg.active
         else:
             return False
+
+
+# TODO @matmair remove after InvenTree 0.7.0 release
+class InvenTreePlugin(InvenTreePluginBase):
+    """
+    This is here for leagcy reasons and will be removed in the next major release
+    """
+    def __init__(self):
+        warnings.warn("Using the InvenTreePlugin is depreceated", DeprecationWarning)
+        super().__init__()