[nostalgia] Add basic support for subsheets

src/nostalgia/studio/lib/project.hpp

@@ -50,8 +50,7 @@ class NOSTALGIASTUDIO_EXPORT Project {
 		/**
 		 * Writes a MetalClaw object to the project at the given path.
 		 */
-		template<typename T>
-		ox::Error writeObj(const ox::String &path, T *obj) const noexcept;
+		ox::Error writeObj(const ox::String &path, auto *obj) const noexcept;
 
 		template<typename T>
 		ox::Result<ox::UniquePtr<T>> loadObj(const ox::String &path) const noexcept;
@@ -86,8 +85,7 @@ class NOSTALGIASTUDIO_EXPORT Project {
 
 };
 
-template<typename T>
-ox::Error Project::writeObj(const ox::String &path, T *obj) const noexcept {
+ox::Error Project::writeObj(const ox::String &path, auto *obj) const noexcept {
 	// write MetalClaw
 	oxRequireM(buff, ox::writeClaw(obj, ox::ClawFormat::Metal));
 	// write to FS