Add: store base graphics parameters in openttd.cfg.

src/newgrf_config.h

@@ -174,6 +174,7 @@ struct GRFConfig : ZeroedMemoryAllocator {
 	struct GRFConfig *next; ///< NOSAVE: Next item in the linked list
 
 	bool IsCompatible(uint32_t old_version) const;
+	void SetParams(const std::vector<uint32_t> &pars);
 	void CopyParams(const GRFConfig &src);
 
 	std::optional<std::string> GetTextfile(TextfileType type) const;