Metrics opt-out UI functionality

[halgari]

resolves #451

This PR provides the following:

• GlobalSettingsManager - a manager for setting app-wide settings, like metrics opt-in/opt-out. Settings are put in a global datastore and each setting has its own ID
• UI components - Overlay view/view model for asking the users if they want to opt-in/opt-out
• Calls to the overlay in the MainWindowViewModel, that checks to see if the user has been asked about metrics and displays the UI if they haven't. If we want to reset the opt-in settings we need only delete their answer from the settings manager. No answer means no metrics

Example of Behavior:

[github-actions]

This PR conflicts with main. You need to rebase the PR before it can be merged.

[github-actions]

This PR doesn't conflict with main anymore. It can be merged after all status checks have passed and it has been reviewed.

[codecov]

Codecov Report

Merging #568 (5c1f4a8) into main (d84e5e5) will increase coverage by 0.25%.
The diff coverage is 88.19%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #568      +/-   ##
==========================================
+ Coverage   67.85%   68.11%   +0.25%     
==========================================
  Files         595      602       +7     
  Lines       16065    16204     +139     
  Branches     1097     1103       +6     
==========================================
+ Hits        10901    11037     +136     
- Misses       4880     4883       +3     
  Partials      284      284              

Flag	Coverage Δ
Linux	67.40% <88.19%> (+0.31%)	⬆️
Windows	67.21% <88.19%> (+0.19%)	⬆️
clean_environment_tests	68.10% <88.19%> (+0.25%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
src/NexusMods.App.UI/App.axaml	66.66% <ø> (ø)
...rc/NexusMods.App.UI/Resources/Language.Designer.cs	48.71% <26.31%> (-17.95%)	⬇️
...lays/MetricsOptIn/MetricsOptInDesignerViewModel.cs	90.00% <90.00%> (ø)
....UI/Overlays/MetricsOptIn/MetricsOptInViewModel.cs	91.30% <91.30%> (ø)
...NexusMods.App.UI/Theme/ButtonStyles/Hyperlink.xaml	91.66% <91.66%> (ø)
...c/MessageBox/OkCancel/MessageBoxOkCancelView.axaml	100.00% <100.00%> (ø)
...pp.UI/Overlays/MetricsOptIn/MetricsOptInView.axaml	100.00% <100.00%> (ø)
...UI/Overlays/MetricsOptIn/MetricsOptInView.axaml.cs	100.00% <100.00%> (ø)
src/NexusMods.App.UI/Overlays/OverlayController.cs	84.78% <100.00%> (+0.33%)	⬆️
src/NexusMods.App.UI/Services.cs	97.77% <100.00%> (+0.05%)	⬆️
... and 6 more

... and 4 files with indirect coverage changes

[Sewer56]

Looks fine to me.