[Spells] Added Spell.h to new folder, moved some enumerations over to
SpellInfo.h and updated definitions (Thanks to TC's work)
[Spells] Merging some spell code from TC to work with as a starting
point for the new spell system.
[Core] More updates to spell rewrite
[Spells] Added spellcategory dbc file, added flag96 class from TC,
organized spell structure a little more.