feat: collect splitwolf lwmp tree

lwmp.zip from the project's downloads (sha1 1145464c), 2308 files read by path. Equal files sit in one folder per rotation, so the tree is kept out of dedup.

scripts/dedup.py

@@ -43,6 +43,9 @@ NODEDUP_DIRS = {
     # share one keymap, C64 and CBM-II one palette. With the copies removed
     # the name step served the C128 keymap to all of them.
     "c64-emu",
+    # SplitWolf reads lwmp/ by path, one sprites/dirN folder per rotation:
+    # 435 of its 2308 files are equal to another one in the tree.
+    "lwmp",
     # PinMAME reads a sound-only parent (gts80s) as its own archive, equal
     # byte for byte to the base set. Folding them into the clone map would
     # key gts1.zip twice, once for MAME's set and once for PinMAME's.