Store the ScriptInterface& in ModuleLoader::Result

During hotloading the `ScriptRequest` was constructed from a
`JSContext*`. That requires that already an other `ScriptRequest` is
active. Which isn't always the case.
Now The `ScriptRequest` is constructed from a `ScriptInterface&`.

Storing a `ScriptInterface&` in the `ModuleLoader::Result` allows to
remove the `m_Result` as it is retrieved from the `ScriptInterface`.

source/scriptinterface/ModuleLoader.h

@@ -29,6 +29,7 @@
 #include <vector>
 
 class ScriptContext;
+class ScriptInterface;
 class ScriptRequest;
 
 namespace Script
@@ -166,8 +167,7 @@ public:
 	void Resume();
 
 private:
-	JSContext* m_Cx;
-	ModuleLoader& m_Loader;
+	const ScriptInterface& m_Script;
 	VfsPath m_ModulePath;
 	Future m_Storage;
 };