Location of PowerToys config files needs to cutomizable

### Microsoft PowerToys version

0.100.0

### Installation method

PowerToys auto-update

### Area(s) with issue?

General

### Steps to reproduce

I upgraded Powertoys and it installs the config files in my personal folders, which is OneDrive and by policy my company does not allow these files to be uploaded to Onedrive.
How to choose a different location for these config files?

### ✔️ Expected Behavior

_No response_

### ❌ Actual Behavior

_No response_

### Upload Bug Report ZIP-file

_No response_

### Additional Information

OS Version: Microsoft Windows NT 10.0.26100.0
.NET Version: .NET 10.0.8
PowerToys is running as user (non-elevated)
Install scope: per user
Operating System Language: English (Netherlands)
System locale: en-NL

### Other Software

_No response_

The issue names no files, tests, or entry points. Start by locating PowerToys' per-user configuration storage and how its path is selected for non-elevated installations. Done means users can choose a location outside OneDrive and PowerToys consistently reads and writes its configuration there.

Written by the indexing model from the issue text.