Add prune sub command

[Dark345]

hello

Both cosmos sdk 0.45.x and 0.46.x makes a pruning subcommand available

see https://github.com/cosmos/cosmos-sdk/pull/12742 for more details

is that ready to be implemented in go-bitsong ?

thanks

[angelorc]

Yes it can be implemented with a minor upgrade.

[Dark345]

Yes it can be implemented with a minor upgrade.

well, that would be great, please consider to include in next upgrade

[angelorc]

Sure