add bird animation

pulsjam2025/Player/PlayerMovement.gd

pulsjam2025/Player/PlayerScene.tscn

pulsjam2025/Player/bird_down.png

pulsjam2025/Player/bird_down.png.import

pulsjam2025/Player/bird_down_2.png

pulsjam2025/Player/bird_down_2.png.import

pulsjam2025/Player/bird_up.png

pulsjam2025/Player/bird_up.png.import

pulsjam2025/Player/bird_up_2.png

pulsjam2025/Player/bird_up_2.png.import

pulsjam2025/Player/bird_vertical.png

pulsjam2025/Player/bird_vertical.png.import

pulsjam2025/Player/bird_vertival_2.png

pulsjam2025/Player/bird_vertival_2.png.import