Question - is there a way to clear all engine rules in a single command? or a way to

Hello @CacheControl,
first, thanks for this amazing rules engine library and the great documentation you created.
second, I am wondering is there a way to clear all existing rules from an engine instance?
e.g. `engine.clearAllRules()`.

or a way to re-create an engine instance with different rules?

先檢查引擎執行個體 API 和現有文件，以確定規則的儲存方式，以及執行個體是否能以不同規則重新建立。定義所需結果是清除全部內容的命令，還是有文件說明的執行個體替換，然後確認引擎現有的使用檢查涵蓋所選行為。

由索引模型根據 Issue 內容生成。