feat: Add Flow Action to calculate duration between dates with schedu…

[anveshmupparaju]

This pull request introduces a new Flow Action in ServiceNow that calculates the duration between a given start date and end date. The action considers a specified schedule and time zone to ensure accurate duration computation.

Inputs:

Start Date

End Date

Schedule

Time Zone
Outputs:

Days

Hours

Minutes

Seconds

Total Duration (in milliseconds)

Notes:

The duration is parsed and returned in both human-readable format and total seconds.

Handles partial durations (e.g., only minutes or seconds) gracefully.

[github-actions]

✅ Valid PR for ActionPack

Thank you for your contribution. This PR complies with the CONTRIBUTING.md.
A maintainer will review this shortly. In the meantime, Happy Hacking!

[bird-03]

Thanks for the contribution! Handling partial duration will be very helpful in many cases
Happy Hacking!