docs: add json_path_query

[BohuTANG]

… func

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Summary

• JSON_PATH_QUERY: Get all JSON items returned by JSON path for the specified JSON value.
• JSON_PATH_QUERY_ARRAY: Get all JSON items returned by JSON path for the specified JSON value and wrap a result into an array.
• JSON_PATH_QUERY_FIRST: Get the first JSON item returned by JSON path for the specified JSON value.

Closes #issue

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Name	Status	Preview	Comments	Updated (UTC)
databend	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 22, 2023 8:07am

[BohuTANG]

This looks a bug:

SELECT     name,     typeof(JSON_PATH_QUERY(details, '$.features.*')) AS all_features FROM     products;
ERROR 1105 (HY000): Code: 1001, Text = Logical error, there is a bug!.

cc @b41sh