Support for core dump execution

Hello guys!

So far I really like this CDT-GDB-Adapter functionality.

I was wondering how would you go about starting a debug session with a core dump? Usually you would pass gdb the `core ` command but I'm not sure how to do it with the adapter if possible at all.

I understand there might some changes necessary like disabling several functionality like execution on such cases, but is it possible to do right now ? if not are you willing to support it in the feature? I could help to contribute for it if it useful for new feature.