Remove all references to Amino in IBC verification

[cwgoes]

We should not use Amino to serialise or deserialise anything which is verified with proofs in IBC (so really anything at all).

[colin-axner]

to do's

• migrate 23-commitments to proto (define Any for each interface)
• migrate localhost client state to proto [migrate localhost client state to proto #6925]
• migrate tendermint to use concrete commitment types instead of exported
• migrate client messages to proto
• migrate consensus states to proto
• migrate headers/evidence to proto (requires tm update)
• migrate client state to proto
• remove amino registration in commitments post genesis
• remove amino all amino registration after headers/evidence
• all client/ funcs should use proto codec not LegacyAmino

[colin-axner]

we can't do any more removal until

• tendermint is updated (along with headers and evidence)
• simapp is updated to supporting proto usage only