Updated food mod and added its items in hud/hunger.lua

- Updated food mod (now splitted between food, containing the API, and food_basic, containing the items/craft recipes)
 - Added food's items un hud/hunger.lua

mods/food/food_basic/README.md

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+The Food Mod
+============
+
+This is the main mod in the food mod collection.
+
+Version 2.3
+
+The Aims
+--------
+
+All content should follow these aims:
+* Basis for expansion - supplies a framework of ingredients for other mods to build upon
+* Mod support without dependancies - this allows flexibility for the user
+* Minetest-game worthy - (Minimalism) This mod only contains traditional foods - such as cakes, soups and bread.
+
+Documentation
+-------------
+
+Recipe guide: https://www.dropbox.com/s/tsvjmobv9n3isu0/food_crafting.pdf?dl=1
+
+Expansion Packs
+---------------
+
+There are expansion mods available. Just install them in a mod folder, and everything should be fine.
+
+* Sweet Foods - https://github.com/rubenwardy/food_sweet
+* Modern food (Needs updating) - burgers, soft drinks, pop corn, coffee, etc
+
+Licensing
+---------
+
+Created by rubenwardy
+License for code: GPL 3.0 or later.
+License for textures: CC-BY-SA
+
+Exceptions:
+
+* Baked potato texture by Doc, WTFPL
+* Dough, flour and wheat textures from default farming mod, WTFPL
+* Egg and milk textures from Mobf, CC BY SA
+
+Have I missed out credit? Please tell me.