Add task_name to InitializeMTCTask

[DaniGarciaLopez]

Allowing to set the name of the task from the tree. Specially useful when you're planning multiple tasks in sequence.

[captain-yoshi]

Yes very useful.

Just waiting the discussion to see if we could use name instead of task_name. BehaviorTree/BehaviorTree.CPP#901

[DaniGarciaLopez]

I agree. I also think using just name is better. This change would also be beneficial for stage_name and container_name.

However, I suppose a change like this would make the btcpp API incompatible, requiring a new version to be released, similar to what happened with the ports order. I think it will take some time to be ready.

Let's see if Davide can reply to us, as I haven’t seen him very active in the Discussions tab lately.