[NEOS-1178] Improve Transformers for Timestamps

[nickzelei]

Our transformers for timestamps aren't great right now, and/or they are quite limiting.

I have a timestamp with timezonea and all I see is this:

_{From SyncLinear.com | NEOS-1178}

[nickzelei]

This could be a good usecase of adding a new timestamp transformer that is really smart and is very typeaware.

It should handle ints, strings, time, timez, timestampz, timestamp.

[nickzelei]

More info here of general timestamps:

1. UTC
2. Specific Timezone
3. System Time
4. Unix

Types of Time:

1. Now() - current time for inserted record
2. Random()
   1. Provide a range of times to generate time for Apr 2023 - May 2024