Add hook 5 (loadModelFromFileAsync), combatlog stub, framecrash vtable hooks, marker assets

Hook 5 intercepts loadModelFromFileAsync (0x71d4e0) to synchronously load M2
model data for fake in-memory file contexts. processLoadedModelData returns 1
and entities are created, but file context cleanup is currently skipped (leaks
0x60 bytes per load) due to a crash in the cleanup path, and there's a later
EIP=0 crash during the game main loop that needs investigation.

Also adds: combatlog module stub, framecrash anchor vtable hooks (GetRelativeTo
and GetWidth/GetHeight crash guards), embedded Raid_UI_FX model assets with
skins and textures, WU_XYZ debug model.

src/combatlog/combatlog.zig

@@ -0,0 +1,14 @@
+//! Combat log freshness module.
+//!
+//! Appends a timestamp to the combat log filename so each client session
+//! gets a fresh log file (e.g. WoWCombatLog_20260227_123456.txt).
+//!
+//! TODO: Find and hook the combat log open/create function.
+
+const con = @import("../console.zig");
+
+pub fn installHooks() void {
+    con.print("[combatlog] Module loaded (stub)\n");
+}
+
+pub fn removeHooks() void {}