fix: add Nexus Tower missing scripts (#1349)

add final missing scripts for nt

also fix the turnin for the breadcrumb missions not showing the completion window.

Fix another missing script

Add another script

fix include guards

Fix dirt clouds not appearing on mission accept

dScripts/02_server/Map/General/FrictionVolumeServer.h

@@ -0,0 +1,13 @@
+#ifndef __FRICTIONVOLUMESERVER__H__
+#define __FRICTIONVOLUMESERVER__H__
+
+#include "CppScripts.h"
+
+class FrictionVolumeServer : public CppScripts::Script {
+public:
+	void OnStartup(Entity* self) override;
+private:
+	const float DefaultFrictionAmount = 1.5f;
+};
+
+#endif  //!__FRICTIONVOLUMESERVER__H__