Upgrade ibc-go to v2.3.0; Add chain v3 migration

[elise-ng]

Ref oursky/likecoin-chain#309 oursky/likecoin-chain#305

• Specify cosmos-sdk at v0.45.5 at go mod require list (previous pr only updated the replace list)
• Cross-checked replace list with sdk go mod
• Upgrade ibc-go to v2.3.0
• Cross-checked upstream ibc transfer test case not changed
• Add migration logic for chain v3.0.0: for ibc-go (ref https://github.com/cosmos/ibc-go/blob/main/docs/migrations/support-denoms-with-slashes.md), & added todo to register x/nft and x/likenft when rebase
• Bump go module version suffix to v3

[elise-ng]

Have we tried v2.0.0 to v3.0.0 upgrade locally?

To be handled at #286, better test after integrating new modules