Is your feature request related to a problem or challenge?

The to_timestamp() function currently uses no timezone (except when the input is a Timestamp type) and outputs a value of type Timestamp(Second/Nanosecond/etc, None) Now that functions have access to the ConfigOptions I believe it is possible to change this function so that it outputs timestamps in the timezone as set in the configuration.

Describe the solution you'd like

to_timestamp understands and outputs timestamps using the timezone as set in the config option datafusion.execution.time_zone.

Describe alternatives you've considered

Leave unchanged.

Additional context

No response