Support `v2/lookup/bvn` mono api

[yarscript]

Please add methods to send requests to api v2

[timoladoyinbo]

Hi @yarscript apologies, just picking this up now. I'll look into this and revert.

[yarscript]

Hi @timoladoyinbo
Thanks for reply, It's ok :)
I was need in few requests and I've implement them in my project so I'd like to create PR with the stuff

[timoladoyinbo]

Hi, @yarscript sounds good. Please feel free to make the PR