Deterministic key for hero when place to board

[noyyyy]

Now, we use getUniqueEntity to generate key when place a hero to board. It's unpredictable and not deterministic. So we can not use optimistic rendering.

I suggest use the following pattern to generate hero key

keccak256(abi.encode(userAddress, gameId, orderOfHeroOnboard))

Accordingly, we need to delete data in table Hero when place piece back to inventory.

[noyyyy]

Will use abi.encodePacked(userAddress, orderOfHeroOnboard) instead