loongson/mirror: links for bm25-retriever

loongson/mirror bm25_retriever-0.3.tar.gz
loongson/mirror bm25_retriever-0.3-py3-none-any.whl
loongson/mirror bm25_retriever-0.1.tar.gz
loongson/mirror bm25_retriever-0.1-py3-none-any.whl