Document the Merge related CLI options

[bgravenorst]

See: Consensys/teku#4874

The options are currently hidden with the -X option, but we should probably document then as if there where visible (without --X), and merge the documentation as soon as the dev work is complete.

It would be good to have the doc ready when the feature is released.

[courtneyeh]

CLI Options made visible:

      --ee-endpoint=<NETWORK>
                             URL for Execution Engine node.
      --ee-jwt-secret-file=<FILENAME>
                             Location of the file specifying the hex-encoded
                               256 bit secret key to be used for
                               verifying/generating jwt tokens
      --validators-proposer-default-fee-recipient[=<ADDRESS>]
                             Default fee recipient sent to the execution
                               engine, which could use it as fee recipient when
                               producing a new execution block.
      --validators-proposer-config[=<STRING>]
                             remote URL or local file path to load proposer
                               configuration from
      --validators-proposer-config-refresh-enabled[=<BOOLEAN>]
                             Enable the proposer configuration reload on every
                               proposer preparation (once per epoch)
                               Default: false

[bgravenorst]

Thanks @courtneyeh, are we still keeping the eth1 CLI options, such as--eth1-endpoint, --eth1-deposit-contract-address, etc.?

[courtneyeh]

Yes everything else remains the same. These are CLI options that have have been added to the original set. @bgravenorst