--dry-run flag for maci-cli

[0xmad]

Prerequisites

Please answer the following question for yourself before submitting a feature request.

• I checked to make sure that this request has not already been filed

Motivation

As a user I'd like to have --dry-run flag for cli to check if all operations are successful without paying for transaction.

Details

We can use static calls for calling contract methods and check if the call is successful. It will allow us to get rid of hardcoded gas limits and user can configure gas limit without fearing of losing money.

Make sure that you have reviewed MACI's Contributor Guidelines

[ctrlc03]

Is this something that we want to keep on the todo list still given we are shifting away from the cli to using contract tasks + other clients (like maci-platform interface)? @0xmad

[0xmad]

I think it's still relevant. --dry-run can be used with contracts and platform.