fix: write OOO event type using advanced Calendar service

[chanelgreco]

Description

The Calendar API now has the option of writing event type out of office through the advance Calendar service for Apps Script. I've updated the script to use this new feature instead of the workaround of creating a default event.

Fixes # (issue)

Is it been tested?

• Development testing done

Checklist

• [ x] My code follows the style guidelines of this project
• [ x] I have performed a self-review of my own code
• I have performed a peer-reviewed with team member(s)
• [x ] I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules