v3.0.0 - Chair Horses

• Adds Chair Horse race.
• Adds custom skeleton for Chair Horses.
• Adds Herman Miller voiced NPC and Chair Horse vendor.
• Adds Herman Miller Stables near Battle-Born Farm outside of Whiterun.
• Adds player Chair Horse sold by Herman Miller.
• Adds spell "Change Chair Horse Style" taught by Herman Miller.
• Adds enchanted ring "Ring of Chair Horse Changing" sold by Herman Miller.