builder: Add all sorts to SORT_OPERATOR_BY_NAME

r2/r2/models/builder.py

@@ -921,6 +921,9 @@ SORT_OPERATOR_BY_NAME = {
     "controversial": operators.desc('_controversy'),
     "confidence": operators.desc('_confidence'),
     "qa": operators.desc('_qa'),
+    "hot": operators.desc('_hot'),
+    "top": operators.desc('_score'),
+    "random": operators.shuffled('_confidence'),
 }