Consider relying solely on local clock time for transfer CLI relative timeouts

[damiannolan]

Summary

Relative timeouts currently lookup client state and consensus state in order to retrieve the latest timestamp of the counterparty chain's consensus state when constructing a packet with relative timeouts.

It may be worth relying solely on local clock time to calculate a relative timeout.

Pros:

• Reduced the amount of the stateful queries on nodes when using a CLI client

Cons:

• Local clock time must be accurate

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[crodriguezvega]

Make transfer and ICA CLIs consistent regarding handling of timeouts.

[damiannolan]

I'll try to address this issue and rebase the 02-client router work before moving that forward.