Make it possible to provide fee manually in 'morley-client'
Clarification and motivation
We're going to use morley-client
library in other applications, which potentially
will work with mainnet.
Feature for setting the transaction fees can be useful for mainnet because some bakers expect higher fees, also fee affects on the time after which operation will be included.
Acceptance criteria
It's possible to provide a fee for the transaction manually.
Edited by Roman Melnikov