Moved packages directory up a level.
Renamed familiar_types to FamiliarType.

And changed all of the properties in this class to have correct C# style.
Renamed familiar_type_skills to FamiliarTypeSkill.
Renamed bazaar_offer_familiar_type_terms to BazaarOfferFamiliarTypeTerm.
Renamed rarity to Rarity.
Renamed race to Race.
Renamed growth to Growth.
Renamed raid_boss_familiar_types to RaidBossFamiliarTypes.
Fixed some relationship names' pluralities.
Renamed event_elite_familiar_types to EventEliteFamiliarType.
Renamed familiar to Familiar.
Renamed skill_patterns to SkillPattern.
Renamed player to Player.
Renamed raid_boss_types to RaidBossTypes.
Renamed skill-related model classes.
Renamed brigade-related model classes.
Renamed bazaar- and item-related model classes.
Fix pluralization errors in model class names.
Renamed raid-boss- and event-related model classes.