Rename cthangover_story to cthangover_game

The mod holding the main game's own scenes and story follows the <game>_game
naming rule; further parts stay <game>_<part>, reusable content is <theme>_pack.

test_suites/gdscript/manifest.json

@@ -8,6 +8,6 @@
     "scripts/*.gd"
   ],
   "depends": [
-    "cthangover_story>=1"
+    "cthangover_game>=1"
   ]
 }