Implement a native method to swap between different node and zone types.
This implementation repurposes the existing menu definitions as base
classes, from which both an "Add" and a "Swap" version would be generated
from. This allows both menus to have the same layout, but use their own
operators for handling the different node/zone types.
In this PR, support for all node editors has been implemented.
Invoking the menu is currently bound to `Shift + S`, same as the old
implementation in Node Wrangler. Since "Swap" is implemented as a
regular menu, features that menus already have such as type-to-search
and adding to Quick Favorites don't require any extra caveats to
consider.
Resolves#133452
Pull Request: https://projects.blender.org/blender/blender/pulls/143997
2a1a658492