loongson/pypi: links for slack-log-handler

loongson/mirror slack_log_handler-0.3.0.tar.gz
loongson/mirror slack_log_handler-0.3.0-py3-none-any.whl
loongson/mirror slack_log_handler-0.2.2.tar.gz
loongson/mirror slack_log_handler-0.2.1.tar.gz
loongson/mirror slack_log_handler-0.2.0.tar.gz
loongson/mirror slack_log_handler-0.1.0.tar.gz