[DISCUSS]PIP-413: Support consumer message filter on broker-side for specific subscription

[Aurora Twinkle]

Hi, Pulsar Community.
I open a new PIP for support consumer message filter on broker-side
for specific subscription. Looking forward to your suggestions!

link: https://github.com/apache/pulsar/pull/24305

Thanks,
Linlin Duan(AuroraTwinkle)