Improve error message when scanning unsupported client

[romac]

Summary

Problem definition

During scanning, when we encounter an unsupported type of client (for example, a localhost client), the relayer outputs the following error, which while benign because the client will just be skipped, should be improved to not give the impression that the relayer is malfunctioning.

2023-08-14T08:23:23.191084Z  INFO scan.chain{chain=ibcconsumer}: ibc_relayer::supervisor::scan: scanning all clients...
2023-08-14T08:23:23.193751Z  WARN scan.chain{chain=ibcconsumer}: ibc_relayer::chain::cosmos: failed to parse client state IdentifiedClientState { client_id: 09-localhost, client_state: Any { type_url: /ibc.lightclients.localhost.v2.ClientState } }. Error: unknown client state type: /ibc.lightclients.localhost.v2.ClientState

Location:
    /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/flex-error-0.4.4/src/tracer_impl/eyre.rs:10:9

Proposal

Improve the error message above to something like:

encountered unsupported client type `/ibc.lightclients.localhost.v2.ClientState` while scanning client `09-localhost`, skipping the client

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