adding rewind_hash to the grin-wallet --help menu

[MCM-Mike]

Currently as of version grin-wallet 5.0.3 we have the following --help menu:

FLAGS:
    -h, --help          Prints help information
    -s, --show_spent    Show spent outputs on wallet output commands
        --testnet       Run grin against the Testnet (as opposed to mainnet)
        --usernet       Run grin as a local-only network. Doesn't block peer connections but will not connect to any
                        peer or seed
    -V, --version       Prints version information

OPTIONS:
    -a, --account <account>                          Wallet account to use for this operation [default: default]
    -r, --api_server_address <api_server_address>
            Api address of running node on which to check inputs and post transactions

    -p, --pass <pass>                                Wallet passphrase used to encrypt wallet seed
    -t, --top_level_dir <top_level_dir>
            Top directory in which wallet files are stored (location of 'grin-wallet.toml')


SUBCOMMANDS:
    account         List wallet accounts or create a new account
    address         Display the wallet's Slatepack address
    cancel          Cancels a previously created transaction, freeing previously locked outputs for use again
    cli             Start the wallet in interactive CLI mode (EXPERIMENTAL and UNDER DEVELOPMENT)
    close           Closes the wallet (interactive mode only)
    export_proof    Export a payment proof from a completed transaction
    finalize        Processes a Slatepack Message to finalize a transfer.
    help            Prints this message or the help of the given subcommand(s)
    info            Basic wallet contents summary
    init            Initialize a new wallet seed file and database
    invoice         Initialize an invoice transaction, outputting a Slatepack Message with the result
    listen          Runs the wallet in listening mode waiting for transactions
    open            Opens a wallet (interactive mode only)
    outputs         Raw wallet output info (list of outputs)
    owner_api       Runs the wallet's local web API
    pay             Spend coins to pay the provided invoice transaction
    post            Posts a finalized transaction to the chain
    receive         Processes a Slatepack Message to accept a transfer from a sender
    recover         Displays a recovery phrase for the wallet. (use `init -r` to perform recovery)
    repost          Reposts a stored, completed but unconfirmed transaction to the chain, or dumps it to a file
    scan            Checks a wallet's outputs against a live node, repairing and restoring missing outputs if
                    required
    send            Builds a transaction to send coins and sends to the recipient via the Slatepack workflow
    txs             Display transaction information
    unpack          Unpack and display an armored Slatepack Message, decrypting if possible
    verify_proof    Verify a payment proof

we implemented rewind_hash #630 therefore we need to update the --help menu of the grin-wallet.

[MCM-Mike]

Its already in master branch:

grin-wallet/src/bin/grin-wallet.yml

Line 51 in c424a0e

- rewind_hash:

closing this issue.