[GPO] Check if config changed before applying changes

[KnifMelti]

Proposed Changes

In the original script, a completely new trigger is created every time WAU-Policies runs.
For interval-based schedules, this means that the starting point for the interval is continuously reset to "now".
Since WAU-Policies runs daily at 06:00, these tasks will never actually execute - they are constantly pushed forward in time to the next interval.
This is why a solution that only updates triggers when the configuration has actually changed is necessary for all scheduling types with intervals.

Related Issues

Closes #933

[KnifMelti]

In a coming MSI installation, we could trigger a run of WAU-Policies at the end to pick up the settings from GPO if enabled instead of letting it wait until the next morning @Romanitho