[Feature][SDK] Transform support CONVERT_TZ() function

[emptyOVO]

Description

• parent issue: [Umbrella] Tencent Rhino-bird: Expand InLong Transform functions #10796
• from flinksql: https://nightlies.apache.org/flink/flink-docs-master/docs/dev/table/functions/systemfunctions/#string-functions
• CONVERT_TZ(string1, string2, string3)--Converts a datetime string1 (with default ISO timestamp format ‘yyyy-MM-dd HH:mm:ss’) from time zone string2 to time zone string3. The format of time zone should be either an abbreviation such as “PST”, a full name such as “America/Los_Angeles”, or a custom ID such as “GMT-08:00”.

Use case

CONVERT_TZ(‘1970-01-01 00:00:00’, ‘UTC’, ‘America/Los_Angeles’) returns ‘1969-12-31 16:00:00’.

Are you willing to submit PR?

• Yes, I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct