Feature Request: Support color4dir and perhaps colordegrotate palettes in newer versions of Minetest

[singularis-mzf]

I'd like Unified Dyes to support a new 64-color palette for nodes with paramtype2 == "color4dir" in Minetest 5.7.0 and newer. The support could be disabled in older version of the engine.

It would be also a good idea to add a split-palette support for paramtype2 == "colordegrotate", which can use the same palette as the current split-palette nodes, however this is not as important for me.