Port improved/better quality textures from K1

[DarthParametric]

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There's already an existing mod for this, but there are issues with envmaps, which will need to be addressed (most expedient solution is presumably removing the alpha masks).

Here's a list of textures with the same filename that have a larger version in K1:

Filename				K1 Size		TSL Size
LEH_EHawk01				1024x1024	256x256
C_Brith01				512x512		64x64
C_Tach01				512x512		128x128
C_DrdAssassin01				512x512		256x256
C_DrdAstro01				512x512		256x256
C_DrdAstro02				512x512		256x256
C_DrdAstro03				512x512		256x256
C_DrdMkFour01				512x512		256x256
C_DrdMkOne01				512x512		256x256
C_Drdmkone02				512x512		256x256
C_DrdProbe01				512x512		256x256
C_DrdProt01				512x512		256x256
C_DrdProt02				512x512		256x256
C_DrdProt03				512x512		256x256
C_DrdProt04				512x512		256x256
C_DrdSentry01				512x512		256x256
C_DrdWar01				512x512		256x256
C_DrdWar02				512x512		256x256
C_DrdWar03				512x512		256x256
C_DrdWar04				512x512		256x256
C_DrdWar05				512x512		256x256
C_Firixa01				512x512		256x256
C_Hutt01				512x512		256x256
C_Hutt02				512x512		256x256
C_Hutt03				512x512		256x256
C_Hutt04				512x512		256x256
C_Iriaz01				512x512		256x256
C_Ithorian01				512x512		256x256
C_Ithorian02				512x512		256x256
C_Ithorian03				512x512		256x256
C_Jawa01				512x512		256x256
C_Kataarn01				512x512		256x256
C_Kataarn02				512x512		256x256
C_Khounda01				512x512		256x256
C_Khounda02				512x512		256x256
C_Khounda03				512x512		256x256
C_Khounda04				512x512		256x256
C_Khoundb01				512x512		256x256
C_Khoundb02				512x512		256x256
C_Khoundb03				512x512		256x256
C_Khoundb04				512x512		256x256
C_Kinrath01				512x512		256x256
C_Kinrath02				512x512		256x256
C_Kinrath03				512x512		256x256
C_Kinrath04				512x512		256x256
C_Mykal01				512x512		256x256
C_Rakghoul01				512x512		256x256
C_Ronto01				512x512		256x256
C_Seabeast01				512x512		256x256
C_Shyrack01				512x512		256x256
C_Shyrack02				512x512		256x256
C_Tukata01				512x512		256x256
C_Twohead01				512x512		256x256
C_Verkaal01				512x512		256x256
C_Wraid01				512x512		256x256
C_Wraid02				512x512		256x256
C_Wraid03				512x512		256x256
C_Wraid04				512x512		256x256
LEH_bike				512x512		256x256
LMI_bed01				512x512		256x256
LTA_dor02				512x512		256x256
LUN_dor01				512x512		256x256
PLC_Rakathol1				256x256		128x128