Porting RadialGauge

[niels9001]

This PR ports over the RadialGauge:

• UWP/WASDK only (composition)
• Porting over RadialGauge from the existing toolkit
• Sample, docs and tests included.
• New modern look and feel
• New properties: ScaleLength, ScaleTickCornerRadius, NeedleBorderBrush, NeedleBorderThickness, TickCornerRadius, TickPadding

Before:

After:

[Arlodotexe]

Found a bug - setting the ScalePadding too high causes a crash.

Recording.2023-05-09.134102.mp4

[XamlBrewer]

Definitely love the new position of the ticks, on the inside of the scale.

[XamlBrewer]

The default value for IsInteractive (= reacting to touch and mouse events) was changed from false to true. That's a good idea, but then you also need to register the Tapped and Manipulation* events in the OnApplyTemplate.

e.g. (not sure this way is the best practice though, but it works)

        OnInteractivityChanged(this, null);
        base.OnApplyTemplate();

Otherwise the gauge will not be interactive, even when set specifically:
<controls:RadialGauge IsInteractive="True" />

[niels9001]

The default value for IsInteractive (= reacting to touch and mouse events) was changed from false to true. That's a good idea, but then you also need to register the Tapped and Manipulation* events in the OnApplyTemplate.

e.g. (not sure this way is the best practice though, but it works)

        OnInteractivityChanged(this, null);
        base.OnApplyTemplate();

Otherwise the gauge will not be interactive, even when set specifically: <controls:RadialGauge IsInteractive="True" />

Thanks! Addressed the feedback, is now works as intended :)!

[Arlodotexe]

Before we merge this and publish to NuGet, I need to check that #43 won't be an issue here.