Feature: #103529 - Introduce hotkey for "Save and Close" 

See forge#103529

Description 

A new hotkey is introduced in the FormEngine scope that lets editors invoke "Save and Close" via Ctrl/Cmd + Shift + S.

Impact 

Next to the existing Ctrl/Cmd + s hotkey (Save), the hotkey Ctrl/Cmd + Shift + S (Save and Close) became available.