Merge branch 'listenings-filter' into 'develop'

Added username and domain filter on /history/listenings endpoint

See merge request !771

api/funkwhale_api/history/filters.py

+import django_filters
+
 from funkwhale_api.moderation import filters as moderation_filters
 
 from . import models
 
 
 class ListeningFilter(moderation_filters.HiddenContentFilterSet):
+    username = django_filters.CharFilter("user__username")
+    domain = django_filters.CharFilter("user__actor__domain_id")
+
     class Meta:
         model = models.Listening
         hidden_content_fields_mapping = moderation_filters.USER_FILTER_CONFIG[