Add `compostability` to node definition group.
* mcl_cake/init.lua (cake);
* mcl_core/craftitems.lua (apple);
* mcl_core/nodes_base.lua (dirt with grass);
* mcl_core/nodes_cactuscane.lua (cactus, sugarcane);
* mcl_core/nodes_climb.lua (vines);
* mcl_core/nodes_trees.lua (leaves, saplings);
* mcl_dye/init.lua (cocoa beans);
* mcl_farming/beetroot.lua (beetroot, & seeds);
* mcl_farming/carrots.lua (carrot);
* mcl_farming/melon.lua (melon, & slice, & seeds);
* mcl_farming/potatoes.lua (potato, baked potato);
* mcl_farming/pumpkin.lua (pumpkin, carved &, & seeds, & pie);
* mcl_farming/wheat.lua (wheat, cookie, bread, hay block);
* mcl_flowers/init.lua (flowers, ferns, grass, & tall variants);
* mcl_mushrooms/small.lua (red and brown mushrooms);
* mcl_mushrooms/huge.lua (red and brown huge mushrooms);
* mcl_nether/init.lua (nether wart block);
* mcl_nether/nether_wart.lua (nether wart);
* mcl_ocean/kelp.lua (kelp, dried &, & block);
* mcl_ocean/sea_pickle.lua (sea pickle);
* mcl_ocean/seagrass.lua (seagrass).