Added method for triggers to check whether they match all transactions

app/Rules/Triggers/TriggerInterface.php

@@ -32,4 +32,11 @@ interface TriggerInterface
      * @return bool
      */
     public function triggered();
+    
+    /**
+     * Checks whether this trigger will match all transactions
+     * For example: amount > 0 or description starts with ''
+     * @return bool
+     */
+    public function matchesAnything();
 }