Adds filtering of activations by project

Author: AlexSCorey

src/aap_eda/api/filters/activation.py

@@ -34,9 +34,13 @@ class ActivationFilter(django_filters.FilterSet):
         label="Filter by Decision Environment ID.",
     )
 
+    project = django_filters.NumberFilter(
+        field_name="project", lookup_expr="exact", label="Filter by project id"
+    )
+
     class Meta:
         model = models.Activation
-        fields = ["name", "status", "decision_environment_id"]
+        fields = ["name", "status", "decision_environment_id", "project"]
 
 
 class ActivationInstanceFilter(django_filters.FilterSet):