Currently the node link ui template only works with a few socket types.
This commit addes support for the rest of the socket type declarations.
As pointed out in D13776 currently after recent refactors
Shader nodes no longer display in the menu.
In the future more socket types will be used in the shader nodes
and makes the UI template work better for other node trees.
Differential Revision: https://developer.blender.org/D13778
ca0c69eaeb