Horde Zombie Spawn Egg

Implement only these approved requirements: - Create a hostile custom biped entity with the default dimensions 0.9 width and 1.4 height, 20 health, 0 armor, 2 attack damage, and no natural spawning. - Set movement speed to 0.322, representing a 40% increase over the vanilla zombie base movement speed of 0.23. - Use aggressive player-targeting and pathfinding goals within the controlled hostile-entity goal set. - Use the vanilla zombie sound family. - Register a spawn egg for the special horde zombie. - Create the horde_zombie texture: A menacing fast zombie for Minecraft, humanoid bipedal undead with torn dark clothing, pale green-gray skin, glowing hostile eyes, and an aggressive Left 4 Dead-inspired horde aesthetic; pixel-art entity texture. - Create the horde_zombie_spawn_egg texture: Minecraft spawn egg inventory icon for a fast horde zombie, dark green and gray speckled egg with subtle red accents; pixel-art item texture.