feat: select from stage with files/pattern.

[youngsofun]

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Summary

Summary about this PR

select * from @s2 (files => ('tuple.parquet'));
select * from @s2 (pattern => '.*parquet');

• files and pattern are the same with those in copy
  • except use => instead of = (learn from snowflake)
  • pattern use regex as in copy

Closes #issue

part of #9847

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1 Ignored Deployment

Name	Status	Preview	Comments	Updated
databend	⬜️ Ignored (Inspect)			Feb 3, 2023 at 7:16AM (UTC)

[BohuTANG]

It would be better to add more information for the PR, to make the reviewer/user clear what we did.