Hooks in x/nftmarket and Method to get memo to pass in the hook

[taiki1frsh]

For the frontend-incentive module, I'd like x/nftmarket module to have hooks for the timing of listing NFT and ending listing.

The hook style reference is here:
https://github.com/UnUniFi/chain/blob/main/x/cdp/types/hooks.go
https://github.com/UnUniFi/chain/blob/main/x/cdp/keeper/hooks.go

This hook style doesn't create the two-way interaction between the modules using the hooks.

And, in the listing creation hook, a memo data is required to be in.

[taiki1frsh]

The possible Nftmarket hooks interface:

type NftmarketHooks interface {
   AfterNftListed(ctx sdk.Context, nft_id types.NftIdentifier, incentive_id string)
   AfterNftPaid(ctx sdk.Context, nft_id types.NftIdentifiler, fee_amount mathInt, fee_denom string)
}

[taiki1frsh]

The reference to get memo data in a specific tx that contrains specific message:
https://github.com/UnUniFi/chain/blob/how_to_get_memo/x/nftmint/keeper/get_memo.go

chain/x/nftmint/keeper/msg_server.go

Line 37 in 7ff5955

// memo, err := k.keeper.GetMemo(ctx)

[taiki1frsh]

I'll work on this for ecosystem-incentive module, but this has to be done in nftmarket module.
So I'll make a change on newDevelep on the other branch than the fundamental part of the ecosystem-incentive module.