Add prune sub command to provenanced

[arnabmitra]

Summary/Problem Definition

Both 0.45.x and 0.46.x makes a pruning subcommand available
see
cosmos/cosmos-sdk#12742 for more details
but tl;dr from parent issue

When updating pruning settings, the old states are not pruned automatically.
While there were efforts(https://github.com/cosmos/cosmos-sdk/issues/10942, https://github.com/cosmos/cosmos-sdk/pull/11064) to do that automatically on initialization, it would be helpful to support offline pruning through CLI command as well, which should be easier to implement.

This would be very helpful for provenance to
1.Reduce disk size
2. Do it offline, so doesn't affect node performance etc

Proposal

Add this to root.go in provenance

pruning.PruningCmd(newApp),

PR needs testing #1209

should result in output like

D[2022-11-01|20:55:18.132] Finished loading IAVL tree                   
pruning heights start from 1, end at 11252756

for testnet
cmd
prune --home '/Users/arnabmitra/Downloads/pio-test-home' --app-db-backend 'cleveldb' --pruning 'custom' --pruning-keep-recent 100 --pruning-keep-every 0 --pruning-interval 10
will update issue if process successfully completes.

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