feat(pipeline): add WKBD (Wowee Keybinding) catalog

55th open format — replaces KeyBinding.dbc plus the
AzerothCore-style default-keybind SQL data. Defines the key
bindings shipped with the game: movement (W/A/S/D),
targeting (Tab), action bars (1-9, 0, -, =), UI panels
(C/I/B/P/N/L), chat (Enter), camera (Insert/Delete).

Each binding has an internal action name (SCREAMING_SNAKE
convention — "MOVE_FORWARD"), a primary key, an optional
alternate key, a category for the keybindings UI grouping,
and a flag indicating whether the user can override it.
Hardcoded engine bindings (alt-F4, ESC) set
isUserOverridable=0 so the rebind dialog can't accidentally
break them.

9 categories (Movement / Combat / Targeting / Camera /
UIPanels / Chat / Macro / Bar / Other) for the rebind
dialog grouping.

CLI: --gen-kbd (3 essential WASD/Tab/C bindings), --gen-kbd-
movement (8 movement: WASD + arrow alternates + jump +
autorun), --gen-kbd-ui (10 UI panel bindings covering all
the standard interface windows), --info-wkbd, --validate-wkbd
with --json variants. Validator catches id+actionName+
defaultKey required, category 0..8, alternateKey ==
defaultKey (no point in alt), action-name lowercase warning
(should be SCREAMING_SNAKE), duplicate primary keys (would
silently shadow earlier binding), and duplicate action names.

Format graph: 54 → 55 binary formats. CLI flag count: 791
→ 796.

tools/editor/cli_dispatch.cpp

@@ -88,6 +88,7 @@
 #include "cli_game_tips_catalog.hpp"
 #include "cli_companions_catalog.hpp"
 #include "cli_spell_mechanics_catalog.hpp"
+#include "cli_keybindings_catalog.hpp"
 #include "cli_quest_objective.hpp"
 #include "cli_quest_reward.hpp"
 #include "cli_clone.hpp"
@@ -217,6 +218,7 @@ constexpr DispatchFn kDispatchTable[] = {
     handleGameTipsCatalog,
     handleCompanionsCatalog,
     handleSpellMechanicsCatalog,
+    handleKeybindingsCatalog,
     handleQuestObjective,
     handleQuestReward,
     handleClone,