[Feature] Enable roaming settings via OneDrive file storage

[shweaver-MSFT]

Describe the problem this feature would solve

Related to #72, RoamingSettings have been deprecated by the Windows platform and there is a need for an alternative.

Describe the solution

Integrate with the RoamingSettings constructs of #72 and #73, and create a new OneDriveDataStore to manage roaming settings via files in OneDrive.

var settings = new RoamingSettings(DataStore.OneDrive);

Additional context & Screenshots

There is a working example in Ambie that we can reference:
https://github.com/jenius-apps/ambie/blob/main/src/AmbientSounds/Services/SyncEngine.cs

Hello shweaver-MSFT, thank you for opening an issue with us!

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This issue has been marked as "needs attention 👋" due to no activity for 15 days. Please triage the issue so the fix can be established.

[shweaver-MSFT]

Work is mostly done, lives here: https://github.com/windows-toolkit/Graph-Controls/tree/shweaver/roaming-onedrive

Waiting on the initial RoamingSettings PR to merge before submitting the PR for this.