Extend impl

[vadixidav]

I would like it if Extend was implemented for the bloom filters in this crate. This would allow me to abstract over this data structure for adding data to it. While there is the ASMS trait, I would not like the upstream library I am writing to be aware of this bloom filter or this library since this wasn't the original use case and Extend fits its use case better, while I do want it to be used downstream and still be compatible.

For the time being I am creating a wrapper type that implements extend.