feat(pipeline): add WUMV (Wowee Unit Movement Type) catalog

66th open format — replaces UnitMovement.dbc plus the
movement-modifier portions of CreatureModelData.dbc. Defines
movement speed types (walk / run / swim / flight / fly /
pitch) with their canonical baseline speeds in yards-per-
second, plus the temp speed buffs that stack on top
(Sprint, Aspect of the Cheetah, Travel Form).

12 movement categories cover the canonical surface (Walk /
Run / Backward / Swim / SwimBack / Turn / Flight /
FlightBack / Pitch / Fly / FlyBack / TempBuff). baseSpeed
is yards/second for baseline categories and ignored for
TempBuff entries (which use baseMultiplier instead).
maxMultiplier caps stacking — Sprint capped at 1.4 means
Sprint + Aspect of Cheetah doesn't exceed 1.4× run speed.
stackingPriority resolves conflicts when multiple buffs
of equal multiplier compete (higher wins).

CLI: --gen-umv (4 baseline at canonical WoW vanilla speeds:
Walk 2.5y/s, Run 7.0y/s, Swim 4.7y/s, Turn π rad/s),
--gen-umv-flight (5 flight entries — ground-rail Flight
7y/s, free Fly 14y/s, Pitch 1.5 rad/s, backward variants
at slower 4.5y/s), --gen-umv-buffs (5 temp speed buffs
matching real WoW spell auras with proper durations and
stacking priorities), --info-wumv, --validate-wumv with
--json variants. Validator catches id+name required,
category 0..11, baseMultiplier > 0 (otherwise unit freezes
in place), maxMultiplier >= baseMultiplier (cap below
floor would clamp the base down), baseline categories
need baseSpeed > 0, and Run < 3.0y/s warning (canonical
is 7.0y/s).

Format graph: 65 → 66 binary formats. CLI flag count: 870
→ 875.

tools/editor/cli_arg_required.cpp

@@ -200,6 +200,8 @@ const char* const kArgRequired[] = {
     "--gen-crr", "--gen-crr-defensive", "--gen-crr-spell",
     "--info-wcrr", "--validate-wcrr",
     "--export-wcrr-json", "--import-wcrr-json",
+    "--gen-umv", "--gen-umv-flight", "--gen-umv-buffs",
+    "--info-wumv", "--validate-wumv",
     "--gen-weather-temperate", "--gen-weather-arctic",
     "--gen-weather-desert", "--gen-weather-stormy",
     "--gen-zone-atmosphere",