Derive Debug, PartialEq and Eq for module errors

[hu55a1n1]

Crate

ibc

Summary

Deriving Debug, PartialEq and Eq for module errors will allow library users to match against these errors and react in specific ways.

Proposal

Ideally, all public lib errors should derive Debug, PartialEq and Eq ->

define_error! {
    #[derive(Debug, PartialEq, Eq)]
    Error {
    // ...

Acceptance Criteria

Library users must be able to pattern match against specific errors.

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