[FEATURE REQUEST] Auto-update suspending during gaming and specific full-screen apps

### Please confirm these before moving forward.

- [x] I have searched for my feature proposal and have not found a work-in-progress/duplicate/resolved/discarded issue.
- [x] This proposal is a completely new feature. If you want to suggest an improvement or an enhancement, please use [this template](https://github.com/Devolutions/UniGetUI/issues/new?labels=enhancement&projects=&template=enhancement-improvement.yml&title=%5BENHANCEMENT%5D+%28Enter+your+description+here%29).

### Describe the new feature

Regarding gaming duration, auto-updating should be suspended according to user's setting. For specific full-screen apps, there could be a custom list for users to judge which apps should not be interrupted when they are in full-screen.

### Describe how this new feature could help users

Users would not be interrupted by UAC pop-ups when they are playing games or working intently.