loongson/pypi: links for flashbootstrap

loongson/mirror FlashBootstrap-1.0.tar.gz
loongson/mirror FlashBootstrap-1.0-py3-none-any.whl
loongson/mirror FlashBootstrap-1.0a2.tar.gz
loongson/mirror FlashBootstrap-1.0a2-py3-none-any.whl
loongson/mirror FlashBootstrap-1.0a1.tar.gz
loongson/mirror FlashBootstrap-1.0a1-py3-none-any.whl