Tidying Graphics/Battle_Anims

[Blackforest92]

Description

This PR tidies graphics/battle_anims by moving out graphics used from the new folder and discard what's not used.

======= NOTES =======
graphics/battle_anims/backgrounds/new/psychic.pal renamed to graphics/battle_anims/backgrounds/psychic_new
may require an ifdef, detail here.
I personally against the idea of adding an ifdef for a simple palette swap, if we are ifdef ing this.
Psychic background should at least be updated with Gen4 graphic

graphics/battle_anims/sprites/new/green_star is not new at all, at first glance it is just a copy of vanilla green_star
#if B_NEW_MORNING_SUN_STAR_PARTICLE should be erased if so.
Renamed into green_star_new for now, detail here.

graphics/battle_anims/sprites/new/impact renamed to graphics/battle_anims/sprites/impact_new

graphics/battle_anims/sprites/new/horn renamed to graphics/battle_anims/sprites/horn_hit_new
gBattleAnimSpriteGfx_NewHornHit is not used anywhere and can be safely erased.
gBattleAnimSpritePal_NewHornHit however, is just a minor modified vanilla gBattleAnimSpriteGfx_HornHit
Making B_NEW_HORN_ATTACK_PARTICLE = TRUE useless since there will be no palette swap at all.
It doesn't stop there, gBattleAnimSpritePal_NewHornHit is actually just impact_new.pal
We truly live in a society.
An ifdef for B_NEW_HORN_ATTACK_PARTICLE is required in this code to make it actually do something when B_NEW_HORN_ATTACK_PARTICLE is set to TRUE

graphics/battle_anims/sprites/new/rocks renamed to graphics/battle_anims/sprites/rocks_new

graphics/battle_anims/sprites/new/spikes renamed to graphics/battle_anims/sprites/spikes_new
practically just a palette swap of vanilla spikes, so gBattleAnimSpriteGfx_NewSpikes is not really needed.

graphics/battle_anims/sprites/new/substitute_front renamed to graphics/battle_anims/sprites/substitute_new
graphics/battle_anims/sprites/new/substitute_back renamed to graphics/battle_anims/sprites/substitute_back_new

graphics/battle_anims/sprites/new/sword renamed to graphics/battle_anims/sprites/sword_new

graphics/battle_anims/sprites/new/teeth renamed to graphics/battle_anims/sprites/teeth_new

graphics/battle_anims/sprites/new/thrash renamed to graphics/battle_anims/sprites/new/hands_and_feet_new
ifdef is B_NEW_HANDS_FEET_PARTICLE.

======= DISCARDED FILES =======
backgrounds/new/tectonic_rage.bin
sprites/new/ detailed in here.

[AsparagusEduardo]

Did you check the checksum for the deleted files vs the ones that were kept?
If not, let's first move the files and then worry about duplicated ones.