core: Properly shutdown wl display (#7018)

* correctly destroy wayland globals

* properly shutdown and cleanup hyprland

* appease the nitpick gods and some comments

src/managers/ProtocolManager.hpp

@@ -12,6 +12,7 @@
 class CProtocolManager {
   public:
     CProtocolManager();
+    ~CProtocolManager();
 
     // TODO: rewrite to use the new protocol framework
     std::unique_ptr<CToplevelExportProtocolManager>  m_pToplevelExportProtocolManager;