feat(pipeline): add WPVP (Wowee PvP Honor / Rank) — 60th open format

60th open format milestone — replaces the AzerothCore-style
PvP rank tables plus the vanilla honor-rank reward chains.
Defines PvP progression rungs: vanilla honor ranks (Private
through Grand Marshal / High Warlord), arena rating brackets
(Combatant / Challenger / Rival / Duelist / Gladiator), and
battleground rated tiers.

5 rank kinds (VanillaHonor / ArenaRating / BattlegroundRated /
WorldPvP / ConquestPoint) cover the canonical PvP progression
surface. Each entry carries an alliance-specific name and a
horde-specific name (Grand Marshal = High Warlord; arena tiers
share the same name on both factions), an honor or rating
threshold, and optional gear cross-refs (chest, gloves,
shoulders) into WIT.

Cross-references with prior formats — titleId points at
WTTL.titleId (the unlock title), chest/gloves/shoulders point
at WIT.itemId for the matching PvP set, bracketBgId points at
WBGD.bgId for battleground-bracket gating.

CLI: --gen-pvp (3 vanilla entry tiers Rank2-4 with alliance
vs horde alternate names), --gen-pvp-alliance (9 vanilla
ranks 6-14 with WTTL+WIT cross-refs and ramping honor
thresholds 50k → 260k), --gen-pvp-arena (5 arena rating
brackets 1500/1750/2000/2200/2400 with 10/20/40/80/160 emblem
rewards), --info-wpvp, --validate-wpvp with --json variants.
Validator catches id+name required, kind 0..4, level range
valid, faction-name pairing (one set without the other is a
typo), threshold monotonicity within a rankKind, arena rating
below 1500 floor, and VanillaHonor with minHonor=0 baseline
warning.

Format graph: 59 → 60 binary formats (milestone). CLI flag
count: 826 → 833.

tools/editor/cli_format_table.cpp

@@ -62,6 +62,7 @@ constexpr FormatMagicEntry kFormats[] = {
     {{'W','L','F','G'}, ".wlfg",  "social",    "--info-wlfg",      "LFG / Dungeon Finder catalog"},
     {{'W','M','A','C'}, ".wmac",  "ui",        "--info-wmac",      "Macro / slash command catalog"},
     {{'W','C','H','F'}, ".wchf",  "chars",     "--info-wchf",      "Character hair / face customization catalog"},
+    {{'W','P','V','P'}, ".wpvp",  "pvp",       "--info-wpvp",      "PvP honor rank + arena tier catalog"},
     {{'W','F','A','C'}, ".wfac",  "factions",  nullptr,            "Faction catalog"},
     {{'W','L','C','K'}, ".wlck",  "locks",     nullptr,            "Lock catalog"},
     {{'W','S','K','L'}, ".wskl",  "skills",    nullptr,            "Skill catalog"},