Map account button

[AlexD10S]

In the new version of ink! v6 before an account can interact with a contract, it must be mapped using the transaction typedApi.tx.Revive.map_account().

Currently the UI displays an error message coming from the dry run if the AccountUnmapped.

But for a new developer coming into the ecosystem this might be not very useful, a button to map the account might be the best DevEx

[Daanvdplas]

This can also be done under the hood by the contracts ui