Cut items do not take on the color of the source block

[minetest-mods]

Cut items do not take on the color of the source block

[fluxionary]

cut nodes cannot reflect the original node's color value when using paramtype2 = "color", because they must be rotatable/orient-able (paramtype2 = "facedir"). there is a paramtype2 = "colorfacedir", but this only supports 8 colors.

there's a number of ways to resolve this:

1. register 32 variants of every shape so as to support cutting all possible colored nodes. i'm not certain how one could break up the palate to make this work right, but so far as i know, it's theoretically possible. however, you'd end up w/ 1550 new node ids for every such source node.
2. register separate nodes for every possible facedir, and allow them to be colored. this results in only 1176 node ids (or possibly somewhat fewer, if you account for rotations that yield identical shapes).
3. explicitly throw an error when someone tries to register a node with stairsplus which has paramtype2 = "color" (my preferred solution, and what i'm going with in #191)
4. deep and breaking changes to the fundamental data structures of the game