Support TransformOperations animations in Brush animator

[maxkatz6]

Previously that PR added support for Brush.Transform - #6344, but animations support wasn't added as it's not really possible to interpolate matrixes. Meanwhile, we already have interpolation algorithm for the limited set of TransformOperations.

Saying that, with this PR it's not possible to animate brushes with TransformOperations (Transform="rotate(180deg)"), but not TransformGroup.

[avaloniaui-team]

You can test this PR using the following package version. 11.0.999-cibuild0027932-beta. (feed url: https://pkgs.dev.azure.com/AvaloniaUI/AvaloniaUI/_packaging/avalonia-all/nuget/v3/index.json) [PRBUILDID]

[avaloniaui-team]

You can test this PR using the following package version. 11.0.999-cibuild0027941-beta. (feed url: https://pkgs.dev.azure.com/AvaloniaUI/AvaloniaUI/_packaging/avalonia-all/nuget/v3/index.json) [PRBUILDID]

[avaloniaui-team]

You can test this PR using the following package version. 11.0.999-cibuild0028032-beta. (feed url: https://pkgs.dev.azure.com/AvaloniaUI/AvaloniaUI/_packaging/avalonia-all/nuget/v3/index.json) [PRBUILDID]

[avaloniaui-team]

You can test this PR using the following package version. 11.0.999-cibuild0029093-beta. (feed url: https://pkgs.dev.azure.com/AvaloniaUI/AvaloniaUI/_packaging/avalonia-all/nuget/v3/index.json) [PRBUILDID]