[Feature]: allow discover ledger simulator with ledger_zemu tag

[mmsqe]

current ledger-cosmos-go only support real hardware https://github.com/cosmos/cosmos-sdk/blob/main/crypto/ledger/ledger_real.go#L15, ledger_zemu is useful to support simulate with https://github.com/Zondax/ledger-go/blob/main/ledger_zemu.go as well.

[linear]

SDK-406