logic pro compatible fpga based logic analyzer

Add Nyan Cat animation for Icepi Zero GPDI/HDMI master

1:1 adaptation of a1k0n/tt08-nyan for ECP5 + VGA/TMDS output. Features CORDIC bounce animation, scrolling rainbow bands, twinkling LFSR stars, Bayer dithering, and 6-frame sprite animation at 15 FPS. Sprite data and palettes from original project, rendered at 640x480. 💘 Generated with Crush Assisted-by: Crush:qwen3.7-max