separate food /non-food items from crop files, tidy code

crops/rye_oat.lua

@@ -0,0 +1,50 @@
+
+local S = minetest.get_translator("farming")
+
+--= A nice addition from Ademant's grain mod :)
+
+-- Rye
+
+farming.register_plant("farming:rye", {
+	description = S("Rye seed"),
+	paramtype2 = "meshoptions",
+	inventory_image = "farming_rye_seed.png",
+	steps = 8,
+	place_param2 = 3
+})
+
+-- override rye item
+
+minetest.override_item("farming:rye", {
+	description = S("Rye"),
+	groups = {food_rye = 1, flammable = 4, compostability = 65}
+})
+
+-- override rye crop
+
+minetest.override_item("farming:rye_1", {drop = {}})
+minetest.override_item("farming:rye_2", {drop = {}})
+minetest.override_item("farming:rye_3", {drop = {}})
+
+-- Oats
+
+farming.register_plant("farming:oat", {
+	description = S("Oat seed"),
+	paramtype2 = "meshoptions",
+	inventory_image = "farming_oat_seed.png",
+	steps = 8,
+	place_param2 = 3
+})
+
+-- override oat item
+
+minetest.override_item("farming:oat", {
+	description = S("Oats"),
+	groups = {food_oats = 1, flammable = 4, compostability = 65}
+})
+
+-- override oat crop
+
+minetest.override_item("farming:oat_1", {drop = {}})
+minetest.override_item("farming:oat_2", {drop = {}})
+minetest.override_item("farming:oat_3", {drop = {}})