Per-world Creeper settings complete

- Added per-world Block Damage settings
- Added per-world Entity Damage settings
- Added creeper_settings database support
- Added world-specific Creeper menus
- Added automatic world registration/default inheritance
- Split Creeper listeners
- Updated Creeper behavior to use world settings
- Removed obsolete global Creeper indicators
- Adopted logger-based error reporting standard

src/main/java/com/rsscripting/serveradmin/database/DatabaseManager.java

@@ -76,6 +76,16 @@ public class DatabaseManager {
                     """
             );
 
+            statement.execute(
+                    """
+                    CREATE TABLE IF NOT EXISTS creeper_settings (
+                        world_name TEXT PRIMARY KEY,
+                        block_damage INTEGER NOT NULL,
+                        entity_damage INTEGER NOT NULL
+                    )
+                    """
+            );
+
         }
     }