feat(editor): add WEMO (Emote Definition) — 101st open format

Novel replacement for the EmotesText.dbc + EmotesTextSound
+ EmotesTextData trio that maps /slash-emote commands
(/dance, /wave, /laugh, etc.) to their visible chat text,
animation ID, and per-race voice clip. Each entry binds
one slashCommand to an animationId (refs WANI), soundId
(refs WSND), targetMessage / noTargetMessage formats,
emote kind (Social / Combat / RolePlay / System), sex
filter (Both / Male / Female), required race bit, and a
TTS hint (Talk / Whisper / Yell / Silent) for accessibility
text-to-speech engines.

Three preset emitters covering the canonical emote
buckets: makeBasic (8 universal social emotes — wave /
bow / laugh / cheer / cry / sleep / kneel / applaud),
makeCombat (5 combat-themed — roar / threaten / charge /
victory / surrender), makeRolePlay (6 RP-focused — bonk
/ ponder / soothe / plead / shoo / scoff). Animation IDs
match AnimationData.dbc convention so existing WoW client
mods continue to play the right anims.

Validator catches authoring bugs unique to slash-command
parsing: leading '/' on slashCommand (chat parser strips
it before lookup so the entry would be doubly-prefixed),
uppercase letters (parser case-folds before lookup so the
entry is unreachable), duplicate slash commands (parser
dispatches by exact match — ambiguity would crash the
chat input handler), %s token counts that don't match
target/no-target distinction.

Also expanded --catalog-pluck's foreign-key filter to
include animationId / soundId / particleId / ribbonId /
vehicleId / seatId / currencyId / trainerId / vendorId /
mailTemplateId — caught during smoke-test where pluck
mis-identified WEMO entries by animationId instead of
emoteId. Same class of bug as the WHRT areaId fix.

Format count 100 -> 101. CLI flag count 1126 -> 1131.

tools/editor/cli_catalog_pluck.cpp

@@ -101,6 +101,9 @@ bool isExternalRefField(const std::string& k) {
         "achievementId", "criteriaId", "lootId",
         "soundId", "movieId", "displayId", "modelId",
         "iconId", "textureId", "auraId",
+        "animationId", "particleId", "ribbonId",
+        "vehicleId", "seatId", "currencyId",
+        "trainerId", "vendorId", "mailTemplateId",
     };
     for (const char* ref : kExternals) {
         if (k == ref) return true;