EnHy + objects docs

[hensldm]

Documents EnHy as well as the different objects surrounding it (except os_anime which is large and tbh I didn't feel like documenting all the animtions). Regarding the objects I decided to go with the naming style gHylian + attributes, where attributes describe the npc (old/young, man/woman, details describing their head, etc.) . Any suggestions are welcome of course.