feat: add support for multiple formats in datetime helper functions

[devin-ai-integration]

Added support for multiple formats in the datetime helper functions.

The ab_datetime_parse() and ab_datetime_try_parse() functions now accept an optional list of formats to try before falling back to more-forgiving parsing logic, with an option to disallow fallback to other formats.

This enhancement allows for more precise control over datetime parsing while maintaining backward compatibility with existing code.

Link to Devin run: https://app.devin.ai/sessions/e89928125e0641b39d8f45bccf34adff
Requested by: Aaron

[devin-ai-integration]

🤖 Devin AI Engineer

Original prompt from Aaron:

Received message in Slack channel #dev-devin-ai:

@Devin - Please refactor the CDK `DatetimeBasedCursor` class to use the `datetime_helpers` module. Whenever parsing, you can use the expected parsing format, but you should fall back to our more-forgiving parsing logic. When serializing to strings, we want to always use the standard RFC/ISO protocol, with "T" delimiter as is standard for our helper library.

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add "(aside)" to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring

[devin-ai-integration]

Closing due to inactivity for more than 7 days.