Sort assets by name in AssetManager and ObjectManager

src/main/java/eu/crushedpixel/replaymod/assets/ReplayAsset.java

@@ -15,6 +15,7 @@ public interface ReplayAsset<T> extends GuiEntryListEntry {
 
     void drawToScreen(int x, int y, int maxWidth, int maxHeight);
 
+    String getAssetName();
     void setAssetName(String name);
 
     ReplayAsset<T> copy();

src/main/java/eu/crushedpixel/replaymod/assets/ReplayImageAsset.java

@@ -40,6 +40,11 @@ public class ReplayImageAsset implements ReplayAsset<BufferedImage> {
         this.name = name;
     }
 
+    @Override
+    public String getAssetName() {
+        return name;
+    }
+
     @Override
     public void setAssetName(String name) {
         this.name = name;