Allow parsing any permutation of create sequence options

Hi, many thanks for the project!

I would like to be able to parse the create sequence options in any particular order instead of just what postgreslq/duckdb support. Afaik oracle for example allows any permutation of the options.

If this is something that you'd be willing accept, I would be happy to implement the necessary changes to allow any permutation and hide it behind something like a dialect flag.

首先定位 create-sequence 選項解析器及其現有的 PostgreSQL/DuckDB 排序處理。比較所要求的 Oracle 風格排列，並確定方言旗標應如何控制它們；完成的標準是支援的排列能正確解析，且不改變現有的方言行為，同時測試涵蓋排序情況。

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