Update to_unixtime udf function to support a consistent set of argument types #19119
Description
Is your feature request related to a problem or challenge?
The docs for to_unixtime say "Supports strings, dates, timestamps and double types as input." however that is not actually the case - the currently supported types is Int32, Int64, Null, Float64, Timestamp, and UTF8.
The supported data types should be expanded to support all int types, all uint types, all float types, all Utf8 types, and date types.
Describe the solution you'd like
No response
Describe alternatives you've considered
No response
Additional context
This was brought up as part of a review (#19078 (comment)) by @martin-g