Added skeleton of pclasses

- This. Is. A. Skeleton. Not finished YET.

mods/pclasses/README.md

@@ -0,0 +1,67 @@
+Player Classes
+==============
+
+Yet another class mod for Minetest.
+
+# TODO
+ - Flush and read system for `pclasses.datas.players`
+
+
+# Namespaces
+
+## pclasses
+ - All our stuff
+
+### pclasses.api
+ - All functions used to declare, get, set classes
+
+### pclasses.classes
+ - All classes and their specs
+
+### pclasses.datas
+ - Miscellaneous datas
+
+#### pclasses.datas.players
+ - List of all players' class. Index is player's name and value is the class's name
+
+#### pclasses.datas.hud_ids
+ - Surely useful in the future with a hypothetical hud to show current class
+
+
+# Functions
+
+### pclasses.api.create_class_id
+ - Arguments : None
+ - Indicates the next free id/index in the classes' table
+
+### pclasses.api.id_for_class
+ - Arguments : cname (class' name)
+ - Returns the id/index corresponding the class in the classes' table
+ - Returns 0 if not found, nil if no name given
+
+### pclasses.api.register_class(cname)
+ - Argument : cname
+ - Registers a class in the classes' table
+ - Pretty useless at the moment
+ - Returns class' id or nil if any error
+
+### pclasses.api.get_class_by_id
+ - Argument : id
+ - Return the class' specs (table) corresponding an id or nil when not found
+
+### pclasses.api.get_class_by_name
+ - Argument : cname
+ - Return the class' specs (table) corresponding a class name or nil if not found
+
+### pclasses.api.get_player_class
+ - Argument : pname (player's name)
+ - Return the player's current class' name
+
+### pclasses.api.get_class_players
+ - Argument : cname
+ - Return a list (table) of all players with class cname
+
+### pclasses.api.set_player_class
+ - Arguments : pname, cname
+ - Assign a player the cname class
+