Host the cooking walk-through as a test suite

The cooking_walk integration test moves here from the separate
cooking_walk_test mod as test_suites/cooking_walk, mounted as the virtual
mod cooking__cooking_walk only with --itest=cooking_walk.

test_suites/cooking_walk/manifest.json

@@ -0,0 +1,13 @@
+{
+  "name": "Cooking Walk Test",
+  "description": "Integration test mod: walks the real UI with button clicks (location menus, cooking workbench) through the full home loop: enter house, unlock wolf-meat recipe via item use, cook a ration, verify it in inventory, and walk bedroom/workroom round-trips. Activated only by --itest=cooking_walk.",
+  "sources": [
+    "src/*.cs"
+  ],
+  "depends": [
+    "visual_novel_core>=1",
+    "items_base>=1",
+    "interface>=1",
+    "dialog_base>=1"
+  ]
+}