loongson/pypi: links for sdl3

loongson/mirror sdl3-0.2.0rc0.tar.gz
loongson/mirror sdl3-0.2.0rc0-py3-none-any.whl
loongson/mirror sdl3-0.1.1b0.tar.gz
loongson/mirror SDL3-0.1.1b0-py3-none-any.whl
loongson/mirror sdl3-0.1.0a1.tar.gz
loongson/mirror SDL3-0.1.0a1-py3-none-any.whl