Benches

[vhnatyk]

Looks like we need at least some basic benches to track performance between different changes. I think about the usual criterion but seems It's not working for mobile/wasm targets not to mention no_std

[omershlo]

so we need to find other ways to do benches?

[vhnatyk]

I think we can restore simple bench from your orig repo for now - like in #8 that I can extend then