toggle node activated from collapsed state

[gotjoshua]

Problem statement

When a node is collapsed, i would love to be able to activate or deactivate without needing to expand.
This is especially relevant for view nodes and for the stethoscope.

Example:

1. get a stethoscope all wired up

2. collapse the node
   

3. toggle the active state from a button that is usable in the collapsed state

Sverchok version

Master.

I am open to try a PR, but i'll need some guidance and encouragement from the maintainers.