Relate shared resources using ThicknessMixer & CornerRadiusMixer

We are planning to reference [Irihi.Avalonia.Shared](https://github.com/irihitech/Irihi.Avalonia.Shared) to relate Thickness & CornerRadius in shared resources by using [ThicknessMixer & CornerRadiusMixer](https://github.com/irihitech/Irihi.Avalonia.Shared/tree/v0.3.0/src/Irihi.Avalonia.Shared.Public/MarkupExtensions)