feat(editor): add WCEF (Creature Family) open catalog format

Open replacement for CreatureFamily.dbc plus the per-creature
family fields in Creature.dbc. Defines the family categorization
that pet-able beasts share (Bear / Cat / Wolf / Boar / Crab /
Raptor / Devilsaur / etc), each with its own pet talent tree
(Ferocity / Tenacity / Cunning), food preferences as a bitmask
(Meat / Fish / Bread / Cheese / Fruit / Fungus / Raw), the skill
line that family-specific abilities reference, and the minimum
hunter level required to tame it.

Used by the hunter pet system to decide which talent tree a tamed
pet uses, validate that a hunter can tame a creature, match
feeding-table food items to pet preferences, and gate exotic-beast
families behind the Beast Master 51-point talent.

Cross-references back to WCRT (creature.familyId points here) and
WSPL (family-specific abilities reference WSPL spellId via the
skillLine field).

Three preset emitters: --gen-cef (5 baseline families covering
both major talent trees), --gen-cef-ferocity (4 DPS-tree pets
with bleed/howl/armor-shred mechanics), --gen-cef-exotic (4
exotic Beast Master families requiring 51-point talent).

Validation enforces id+name presence, familyKind 0..5, talent
tree 0..3, no duplicate ids, and warns on:
  - NotPet families with a non-None talent tree (irrelevant)
  - Exotic families with minLevelForTame > 80 (level-cap unreachable)
  - Beast/Exotic families with no food types set (pet would starve)

Wired through the cross-format table; WCEF appears automatically
in all 10 cross-format utilities. Format count 71 -> 72; CLI flag
count 914 -> 919.

tools/editor/cli_arg_required.cpp

@@ -218,6 +218,8 @@ const char* const kArgRequired[] = {
     "--gen-cdb", "--gen-cdb-class", "--gen-cdb-items",
     "--info-wscd", "--validate-wscd",
     "--export-wscd-json", "--import-wscd-json",
+    "--gen-cef", "--gen-cef-ferocity", "--gen-cef-exotic",
+    "--info-wcef", "--validate-wcef",
     "--gen-weather-temperate", "--gen-weather-arctic",
     "--gen-weather-desert", "--gen-weather-stormy",
     "--gen-zone-atmosphere",