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 选项解析器及其现有的 PostgreSQL/DuckDB 排序处理。比较所请求的 Oracle 风格排列，并确定方言标志应如何控制它们；完成的标准是支持的排列能够正确解析，且不改变现有的方言行为，同时测试覆盖排序情况。

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