`z_player_lib`: Part 2

[AngheloAlf]

Here comes part 2 of player_lib!

• Import data and bss
• Decomp some more functions with in-function static data and some other functions which use the data
• Change every use of player's state flags to use the corresponding PLAYER_STATE macros
• Enums for player's limb and eyes/mouth textures
• Some cleanups