fix: address PR #31 and #32 review findings

- Dockerfile: fix LLVM apt repo codename (jammy → noble) for ubuntu:24.04
- build-linux.sh: add missing mkdir -p /wowee-build-src before tar extraction
- Dockerfile: remove dead ENV OSXCROSS_VERSION=1.5 and its unset
- CMakeLists: scope -undefined dynamic_lookup to wowee target only
- GameServices: remove redundant game:: qualifier inside namespace game
- application.cpp: zero out gameServices_ after gameHandler reset in shutdown

include/game/game_services.hpp

@@ -14,7 +14,7 @@ namespace game {
 struct GameServices {
     rendering::Renderer* renderer = nullptr;
     pipeline::AssetManager* assetManager = nullptr;
-    game::ExpansionRegistry* expansionRegistry = nullptr;
+    ExpansionRegistry* expansionRegistry = nullptr;
     uint32_t gryphonDisplayId = 0;
     uint32_t wyvernDisplayId = 0;
 };