More hydra-client level integration tests

- open a head, create smart contract transaction, e.g. to mint a token and redeem it (gift card contract)
- open a head, create a few transactions, reconnect with history = 0
- open a head, create a few transactions, reconnect with history = 1 and check replaying of all past events
- open a head and generate a few invalid transactions / commands and check if they are handled properly
- open a head mint NFT and try to close and move snapshot to L1
- open a head and using getUtxO request and response validate that we handle those properly