config: add type_format and authors facets configuration

cern_search_rest_api/config.py

@@ -122,10 +122,18 @@ RECORDS_REST_FACETS = {
         'aggs': {
             'collection': {
                 'terms': {'field': 'collection'}
+            },
+            'type_format': {
+                'terms': {'field': 'type_format'}
+            },
+            'authors': {
+                'terms': {'field': '_data.authors.exact_match'}
             }
         },
         'post_filters': {
-            'collection': terms_filter("collection")
+            'collection': terms_filter("collection"),
+            'type_format': terms_filter("type_format"),
+            'authors': terms_filter("_data.authors.exact_match")
         }
     }
 }