New Uttercold visuals

game/modules/tome/data/birth/classes/mage.lua

.../modules/tome/data/gfx/particles/shader_ring_rotating.lua

game/modules/tome/data/gfx/particles/shader_wings.lua

.../modules/tome/data/gfx/particles_images/arcanegeneric.png

game/modules/tome/data/gfx/particles_images/coldgeneric.png

.../modules/tome/data/gfx/particles_images/flamesgeneric.png

game/modules/tome/data/gfx/shaders/circular_flames.frag

game/modules/tome/data/gfx/shaders/circular_flames.lua

game/modules/tome/data/talents/spells/ice.lua

game/modules/tome/data/talents/spells/wildfire.lua

game/modules/tome/data/timed_effects/other.lua

game/modules/tome/data/zones/town-angolwen/npcs.lua