Creation of new Script include CaclculateDueDate

[sivamuruganandam-coder]

PR Description:

Description:
This Script Include calculates a future due date by adding a specified number of business days to a given start date, based on a defined schedule.
This can be used anywhere within the server side scripts like fix scripts, background scripts, UI Action (server script).

Pre-requisite:
A schedule record with valid schedule entries should be created in the cmn_schedule table

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[ravichandra1998g]

Hello @sivamuruganandam-coder
Thank you for submitting!
If the check at line no 13 is false, the days won't decrement and it will go in a loop.

we have GlideDate folder under core ServiceNow APIs and this script is more suitable under that folder.

please make the changes and add the script under appropriate folder.