Ruta: Annotation Browser View Extensions

I would like to contribute some small extensions to the Annotation Browser View.

#1:
Tooltip for full type name of selected type node.
#2:
Copy full type name of a selected type to the clipboard by "ctrl+c".
#3:
A button that checks all visible types in the tree, and a button that unchecks all types.

Hope the extensions will be useful,
Martin