Remove remaining Eclipse UI dependencies

[larsk21]

While we removed most Eclipse UI dependencies when transitioning to our new build system, there are still parts left, e.g., in tools/vitruv/change/interaction/dialogs.

[bjthehun]

If no one else would mind, I will be working on this issue.

[bjthehun]

I have identified three explicit Eclipse UI dependencies in the interaction module:

1. org.eclipse.platform:org.eclipse.jface
2. org.eclipse.platform:org.eclipse.ui.workbench
3. org.eclipse.platform:org.eclipse.swt

These dependencies are required to implement and present different dialogs for user input in Eclipse (tools.virtuv.change.interaction.impl.DialogInteractionResultProviderImpl, all classes in tools.vitruv.change.interaction.dialogs). However, only the PlatformUI dependency in DialogInteractionResultProviderImpl is strictly Eclipse-specific (to get a display to show dialogs in).

My question is: Should we keep the dialogs, and if yes, should we use SWT or something else (e.g. Swing/AWT)?