feat: create stage, select stage, copy, infer_schema support named file format.

[youngsofun]

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Summary

create stage stage1  file_format = (format_name = 'my_format')
copy into/from @stage1  from/into table1 file_format = (format_name = 'my_format')
select * from @stage1  (file_format => 'my_format')
select * from infer_schema (file_format => 'my_format')

Closes #issue

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1 Ignored Deployment

Name	Status	Preview	Comments	Updated
databend	⬜️ Ignored (Inspect)			Feb 16, 2023 at 9:04AM (UTC)