loongson/pypi: links for micropython-uasyncio-core

loongson/mirror micropython-uasyncio.core-2.3.tar.gz
loongson/mirror micropython-uasyncio.core-2.1.tar.gz
loongson/mirror micropython-uasyncio.core-1.7.2.tar.gz
loongson/mirror micropython-uasyncio.core-1.6.tar.gz
loongson/mirror micropython-uasyncio.core-1.5.1.tar.gz
loongson/mirror micropython-uasyncio.core-1.4.2.tar.gz
loongson/mirror micropython-uasyncio.core-1.2.1.tar.gz