Implement lazy loading of scripts when they enter a new block

src/main/java/emu/grasscutter/scripts/data/SceneGroup.java

@@ -5,6 +5,8 @@ import java.util.List;
 import emu.grasscutter.utils.Position;
 
 public class SceneGroup {
+	public transient int block_id; // Not an actual variable in the scripts but we will keep it here for reference
+	
 	public int id;
 	public int refresh_id;
 	public Position pos;
@@ -14,4 +16,14 @@ public class SceneGroup {
 	public List<SceneTrigger> triggers;
 	public List<SceneSuite> suites;
 	public SceneInitConfig init_config;
+	
+	private transient boolean isLoaded; // Not an actual variable in the scripts either
+
+	public boolean isLoaded() {
+		return isLoaded;
+	}
+	
+	public boolean setLoaded(boolean loaded) {
+		return loaded;
+	}
 }