feat(editor): add WCMR (Creature Patrol Path) — 90th open format milestone

Open replacement for AzerothCore's creature_movement / waypoints
SQL tables plus the per-spawn waypoint arrays. Defines named
waypoint paths that creatures patrol along: Stormwind guards
walking the city perimeter, AQ40 trash rotating through the
chamber, ICC patrols circling the spire.

Each entry binds a creatureGuid to a sequence of (x, y, z,
delayMs) waypoints. The pathKind controls cycling behavior
(Loop / OneShot / Reverse / Random) and moveType controls the
locomotion kind (Walk / Run / Fly / Swim) — a flying patrol
ignores ground geometry, a swimming patrol stays underwater.

This is the first open format with truly variable-length
per-entry payload. Earlier formats with multi-slot fields
(WSPR's 8-reagent slots, WPSP's 4-item arrays) used fixed-size
caps padded with zeros. WCMR instead uses an inline
length-prefixed waypoint array — entries can be 4 waypoints or
4000, with the loader advancing through the file by reading the
count first then count*16 bytes of waypoint data. Cap of 64K
waypoints per path keeps a corrupted file from allocating
gigabytes.

pathLengthYards(pathId) is the engine helper that sums segment
distances between consecutive waypoints (closing the loop for
Loop kind). Tested across 12-point and 16-point circular paths
that geometrically resolve to the expected ~25y radius and
~60y radius totals.

Cross-references back to WCRT — creatureGuid points at the
spawned creature instance whose behavior mode follows this
patrol.

Three preset emitters: --gen-cmr (3 small paths showing each
pathKind variant), --gen-cmr-city (4 capital-city guard 6-point
loops with 2.0-2.5s waypoint dwell), --gen-cmr-boss (3 long
raid-zone patrols up to 16 waypoints, demonstrating that
variable-length payloads scale).

Validation enforces id+name+creatureGuid+waypoints presence,
pathKind 0..3, moveType 0..3, no duplicate ids; warns on
1-waypoint paths (creature would idle in place) and Loop with
fewer than 3 waypoints (degenerate — indistinguishable from
Reverse).

This is the 90th open format milestone. Wired through the
cross-format table; WCMR appears in all 18 cross-format
utilities. Format count 89 -> 90; CLI flag count 1048 -> 1053.

tools/editor/cli_arg_required.cpp

@@ -276,6 +276,8 @@ const char* const kArgRequired[] = {
     "--gen-sps", "--gen-sps-aura", "--gen-sps-talent",
     "--info-wsps", "--validate-wsps",
     "--export-wsps-json", "--import-wsps-json",
+    "--gen-cmr", "--gen-cmr-city", "--gen-cmr-boss",
+    "--info-wcmr", "--validate-wcmr",
     "--gen-weather-temperate", "--gen-weather-arctic",
     "--gen-weather-desert", "--gen-weather-stormy",
     "--gen-zone-atmosphere",