[Feature] Authorization based execution fee estimation

[alexpitsikoulis]

Motivation

Currently execution fees are estimated from an execution which is costly, the new execution_cost_for_authorization function in snarkVM allows estimation from the authorization which is less costly.

Changes

Change the existing estimateExecutionFee function to generate the authorization, including generated inputs, and estimate the fee using that authorization with the new snarkVM execution_cost_for_authorization function.
The function now takes fewer arguments as proving_key and verifying_key are no longer needed.

Test Plan

A unit test has been introduced comparing the output of the fee estimation of an authorization to the output of the fee estimation of the execution itself.