Add proper handling for vkCmdExecuteGeneratedCommandsEXT in the dump resources codepath

[nickdriscoll-lunarg]

The generated code for vkCmdExecuteGeneratedCommandsEXT is insufficient, as it will issue some Draw/Dispatch/TraceRays commands that will require special handling just like the normal function calls for Draw/Dispatch/TraceRays.

Need to add an override to vulkan_replay_dump_resources.cpp to determine which type of commands are being issued, and then do the necessary handling for that type.