[Feature] Add support for Parallel Stacks

[all500234765]

I would really like to see this feature in this debugger, especially for linux later on, since literally no one provides it on linux for no reason.

Here's a screen shot from Visual Studio of what i would expect:

• Clicking on different stacks would switch thread and stack contexts
• Minimap on the bottom-right is useful for programs that have lots of threads
• Some arrows telling me which stack on which thread has caused an exeption or was paused on
• Highlight of selected thread / stack position

[Axel-Reactor]

@all500234765 CLion does provide this on Linux Would still be great to be added, it's extremely useful to see all stacks at a glance.