feat: add a function to parse a string without timezone to local timestamp

[MichaelLeeHZ]

Which issue does this PR close?

None

Closes #.

Rationale for this change

Recently in my system, I update arrow from 23 to 32, and I found return from function string_to_timestamp_nanos is changed.

Before #2814, function string_to_timestamp_nanos return a local timestamp when parsing a string without an explicit time zone.

// my time zone is UTC+8
string_to_timestamp_nanos("2022-12-30 09:26:56.123")  => 1672363616123

After #2814, I found the function string_to_timestamp_nanos return a UTC timestamp when parsing a string without an explicit time zone.

// my time zone is UTC+8
string_to_timestamp_nanos("2022-12-30 09:26:56.123")  => 1672392416123

In my scene, I need the former.

What changes are included in this PR?

Add a function string_to_local_timestamp_nanos which interprets strings without an explicit time zone as
timestamps with offsets of the local time on the machine.

For example,2022-12-30T09:26:56.123 is interpreted as a local timestamp in the timezone of the machine. For example, if the system timezone is set to Asia/Shanghai (UTC+8) the timestamp will be interpreted as though it were
2022-12-30T09:26:56.123+08:00

Are there any user-facing changes?

[tustvold]

Thank you for this, I would like to take some time to think about this API. I think we might want a way to specify the destination timezone for the function, perhaps adding the ability to pass an Option<Tz>. This would not only cover the case of parsing interpreting as the local timezone, but also parsing into a TimestampArray with a non-UTC timezone set which I think is currently handled incorrectly...

[tustvold]

I've added an alternative proposal in #3795 PTAL 🙏

I think you should be able to just provide it with Local as the timezone parameter

[MichaelLeeHZ]

I think you should be able to just provide it with Local as the timezone parameter

I have read your issue and PR, and there is a question:
if I want to parse a string with time zone, what should I do with string_to_datetime? Do I have to use string_to_timestamp_nanos ?
The precondition is I do not know the format of timestamp-like string.

[tustvold]

string_to_datetime contains all the current logic, including handling strings with an embedded timezone. It will convert them appropriately

See https://github.com/apache/arrow-rs/pull/3795/files#diff-cd568dd408cf11db340aa0259545de48fca7a0c0ac680bb9ff9a34956bab52b1R632

[tustvold]

Closing as I believe this functionality is provided by #3795. Feel free to reopen if I am mistaken