implement status selector

Signed-off-by: Chanwit Kaewkasi <chanwit@gmail.com>

cmd/flux/get_receiver.go

@@ -55,3 +55,8 @@ func (s receiverListAdapter) headers(includeNamespace bool) []string {
 	}
 	return headers
 }
+
+func (s receiverListAdapter) statusSelectorMatches(i int, conditionType, conditionStatus string) bool {
+	item := s.Items[i]
+	return statusMatches(conditionType, conditionStatus, item.Status.Conditions)
+}