Add reference game-state captures

Hand-captured state snapshots (menu through hand_select) used to
build the facts layer and decision handlers. Live run dumps are
gitignored, these stay for reference.

capture/01_menu.json

@@ -0,0 +1,11 @@
+{
+  "state_type": "menu",
+  "menu_screen": "main",
+  "message": "Main menu.",
+  "options": [
+    "singleplayer",
+    "multiplayer",
+    "settings",
+    "quit"
+  ]
+}