[Feature] Biotransformer in enviPath (#364)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#364

epdb/apps.py

@@ -21,7 +21,8 @@ class EPDBConfig(AppConfig):
         autodiscover()
 
         if settings.PLUGINS_ENABLED:
-            from bridge.contracts import Property
+            from bridge.contracts import Property, Classifier
             from utilities.plugin import discover_plugins
 
             settings.PROPERTY_PLUGINS.update(**discover_plugins(_cls=Property))
+            settings.CLASSIFIER_PLUGINS.update(**discover_plugins(_cls=Classifier))