Bagzen Spawn Egg

Implement only these approved requirements: - Create Bagzen as a hostile custom entity using the fixed biped model. - Use the default entity values: width 0.9, height 1.4, health 20, movement speed 0.25, attack damage 2, armor 0, tracking range 8, pig sound family, archetype-appropriate hostile default goals, and no natural spawning. - Provide a Bagzen spawn egg. - Create the bagzen_entity texture: A terrifying humanoid monster named Bagzen, with a distorted horrific face, dark worn clothing, glowing angry eyes, and a threatening sword-like silhouette; pixel-art Minecraft entity texture. - Create the bagzen_spawn_egg texture: Minecraft-style spawn egg for Bagzen, colored dark charcoal, blood red, and pale gray to match a terrifying hostile humanoid monster.