Fix vanilla M2 animations, movement packets, and DBC locale

- Parse vanilla M2 animation tracks (flat arrays with M2Range indices)
  instead of skipping them, fixing T-pose on all vanilla models
- Use C4Quaternion (float[4]) for vanilla bone rotations instead of
  CompressedQuat (int16[4]) which produced garbage transforms
- Fix vanilla M2 attachment struct size (48 bytes, not 40) so weapons
  attach to correct bones instead of model origin
- Route movement packets through expansion-specific packet parsers
  instead of hardcoded WotLK format, fixing server-side position sync
- Fix Spell.dbc field indices for classic/turtle (Name=120, Rank=129,
  IconID=117) - were pointing to Portuguese locale column (+7 offset)
- Change guild roster keybind from J to O (WoW default)
- Add guild opcodes for all expansions

Data/expansions/turtle/dbc_layouts.json

@@ -1,7 +1,7 @@
 {
   "Spell": {
-    "ID": 0, "Attributes": 5, "IconID": 124,
-    "Name": 127, "Tooltip": 154, "Rank": 136
+    "ID": 0, "Attributes": 5, "IconID": 117,
+    "Name": 120, "Tooltip": 147, "Rank": 129
   },
   "ItemDisplayInfo": {
     "ID": 0, "LeftModel": 1, "LeftModelTexture": 3,