Commit _just_ the Bloodmoon rugs from closed PR #34.

[BethOfDeath]

To restate the relevant portion of that PR's commit message (ignore part about "clipping from co-located reversed faces" -- I hadn't internalized the fact such just get merged in the export. Probably still looks better when messed with in Perfect Placement?):

furn_colony_wolfrug01

• Simplified mesh. Was 48 tris, now 34.
• Removed two NiZBufferProperties which (going by an old comment by Greatness7) appeared to be set to default behavior and thus did nothing
• Original's NiAlphaProperty was set to 1-bit alpha sharp edge high filtration mode (15085) and which uses both alpha blending AND testing. Replaced with 13036 to disable blending and sorting, and set threshold to 168 to match appearance (at least in NiSkope).
• Added NiStringExtraData NC to disable collision checking, restoring the function of the NCO which was removed from previous MOP version.
• Vanilla was 2863 bytes, previous MOP version 2851, now 2481. (13% decrease from vanilla)

furn_bearskin_rug

• It appears this one was created with overmuch efficiency, by not enabling backface culling and just leaving the generated backfaces colocating with the visible frontfaces. To get rid of clipping, these backside faces have been sepearated, decimated, flattened, and shifted.
• Shifted and merged some unneeded vertices with identical vcols on topside.
• Bogus NiZBufferProperty removed. NiStringExtraData NCO replaced with NC.
• Weighted normals
• Was: 120 tris 222 verts, now: 74 tris 39 verts.
• Was 5452 bytes, now 4019. (26% decrease)

furn_redwolf_rug

• Same issues as the bearskin rug, same solution.
• Was 144 tris 265 verts, now 94 tris 52 verts.
• Was 6287 bytes, now 5037. (20% decrease)

furn_whitewolf_rug

• Same issues as bearskin rug, same solution
• Was 120 tris and 222 vertices, now 88 tris 46 verts.
• Was 5484 bytes, now 4451. (19% decrease)