Material Tabs and Geometry (SVG) icon

Contributor: @mkanyo (Miklos Kanyo)

Since version 2.2, a new type of tab has been introduced: the MaterialUnderlinedTabItem.
It's a full implementation of the material tabs specifications:

https://material.io/components/tabs

IconOptions values:

1. TopIcon
2. IconOnly
3. LeadingIcon
4. TextOnly

You can also set precisely the gap between the icon and the text thanks to the IconTextSpacing.

Instead of using a classic Image you can also set a svg Geometry icon thanks to the GeometryIcon property.

If you chose to go down this road you can also set the following properties:

• public bool Fill
• public double StrokeThickness
• public double IconTextSpacing