Add MaterialDesignToolBarToggleButton (name is just a suggestion) to make it look like MaterialDesignToolToggleListBox

[bebenins]

This idea came from this ticket, which turned out to be a new .NET behavior: https://github.com/MaterialDesignInXAML/MaterialDesignInXamlToolkit/issues/3677

Basically would like to see a toggle/checkbox styled for ToolBar. Meaning, it looks just like a single-item MaterialDesignToolToggleListBox looks today. When unselected, just make it look flat as the rest of the ToolBar.

Not sure what's better for base, a ToggleButton or a CheckBox. I'm also not super proficient in styling on such low level so I would appreciate if someone could help. Thank you.