Cuckoo filter implementation

[jonathanc-n]

What are everyones thoughts on creating a implementation for the cuckoo filter. Although it was referenced in #1500, it didn't seem to move forward after the bloom filter implementation. Although they serve the same purpose, cuckoo filters are more favourable in workloads where there are frequent deletions (bf struggles with this), and insertions need to have a low false positive rate. There is also the reason of Redis supporting it as well. Let me know your thoughts, and I can open an issue and work on it if needed.