Allow running EditorScripts from the FileSystemDock

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Co-Authored-By: Tomasz Chabora <kobewi4e@gmail.com>

editor/editor_node.h

@@ -990,6 +990,7 @@ public:
 
 	bool ensure_main_scene(bool p_from_native);
 	bool validate_custom_directory();
+	void run_editor_script(const Ref<Script> &p_script);
 };
 
 class EditorPluginList : public Object {