(ui): add goTo channel in ActivityLauncher

Description

Add goToChannelin ActivityLauncher.xml in order to call goTo slot from an activity.

Closes #587 (closed)

How to test it?

• Apply this patch: patchExActivities.patch
• Build and launch ExActivities
• Load an image
• Click on Go To Button
• Check that Volume Rendering activity will be launched.

Data

CT image