Ability to name modifications in SkeletonModificationStack2D

[ghost]

Describe the project you are working on

The 2D Skeleton doc page

Describe the problem or limitation you are having in your project

I forgor which mod corresponds to which nodes and it's a pain to check since everything is so tiny or nested

since #4863 only applies to 3d nodes i guess 2d mod resources are here to stay

Describe the feature / enhancement and how it helps to overcome the problem or limitation

Since there's a big "element x" next to the mod we can change that have a name?

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

the user will click on the element x to change it like a lineedit or something

If this enhancement will not be used often, can it be worked around with a few lines of script?

no

Is there a reason why this should be core and not an add-on in the asset library?

skeletonmodificationstack2d is a core node