[Feature Request] Grouping

[mbd-shift]

Allow grouping of a selection of Nodes.,
Allow to toggle the visibility of a group in the viewing window.

Maybe add a "groups" window like layers in gimp...

This makes it easier to introduce new objects when working with a large number of already existing ones

for example all output shapes of a group can be set to none when the visibility is disabled

Edit:

After Reading 9.1.0 releasenotes:
When a group of nodes is selected, add "move to subgraph" to the context menu,
then automatically generate the in- and outputs