[Feature]: supporting chains with different prefix

[xyz1hang]

Summary

We have the same requirement as #16541

e.g. one chain prefix their address with axmXxxxxxx... another prefix with cosmosXxxxxxxx....

but the String() functions e.g. for AccAdress is using Global config and the String() function is used in tx.Sign

Currently it seems that there's no easy way to support multiple Cosmos based chains in the same process ? I know we have series of tickets to remove Globals but this is very limiting.

I must have missed sth. Would be really appreciated if you can point me in the right direction 🙏

Problem Definition

No response

Proposed Feature

Remove bech32AddressPrefix from global config as it's not really a global attribute

[julienrbrt]

Hey, yes you shouldn't use the .String() function on (Val)AccAddress but use an address codec.
Unfortunately, the global prefix cannot be totally removed just yet for backward compatibility.
What we can do however is mark those String() methods as deprecated 👍🏾

[julienrbrt]

Opened #21436 to use an address codec in tx.Sign.
This address codec is to be found in the client.Context from v0.52.