[Request] ProtocolSupport support

[TheRobLP]

Hello there. I would like to know if it could be possible to add support for ProtocolSupport. Specifically my partner would need to join our 1.16.5 server with a 1.7 client. Because he is on the road often, he is using a program called "PojavLauncher" on his phone. Sadly everything above 1.7 sucks his phone RAM so badly that it becomes unusable. I was wondering if that could be possible to implement somehow. Thanks in advance for any reply.