Lightweight colour picker for hexcol mod

Me and a freind both had a go at making a colour picker for hexcol. Mine is much simpler but more lightweight with a smaller code base. Theirs is more polished.

Note: This is only intended for creative servers as it gives players unlimited access to hexcol items.

Also it is reccomended that you set hexcol_inv to false in the minetest.conf file so that the items don't flood the inventory anymore. After all, this is meant to solve that problem.

Instructions

To open the colour picker, either use the button placed in the unified_inventory menu or use the /cpicker command.

TODO list:

• Make a priv so server admins can restrict access to this feature.