Implement the Ethereum token whitelist logic in Namada

[sug0]

Related to #1290 and anoma/ethereum-bridge#60

[batconjurer]

Several NUT test cases missing from the bridge pool vp. We should check the happy flow. We should check that we reject if an asset is incorrectly labelled. The bridge should also accept NUTs and normals for the same asset simultaneously.

[sug0]

Took out the patch that removed ADDR from native VPs, and opened an issue

[sug0]

added a sanity check in 4b43593

        if hints::unlikely(cap < supply) {
            panic!(
                "Namada's state is faulty! The Ethereum ERC20 asset {token} \
                 has a higher minted supply than the configured token cap: \
                 cap:{cap:?} < supply:{supply:?}"
            );
        }