Show common parameters in each sub command's help message

Below is printed result from `cckey create --help`

```shell
Usage: create [options]

create a new key

Options:

-p, --passphrase passphrase
-h, --help output usage information
```

The help message does not describe common parameters, like `--account-type`, `--keys-path, and `--network-id`. A user may confuse how she/he set an account type or network id.
We should show common parameters in subcommand's help message.