EZLog command line tool

``` Usage: ezlog-cli [OPTIONS]

Options: -i, --input Origin ezlog file path

-o, --output Decode log file path

-c, --config Sets a JSON config file contains the configuration of the logger.

      { "key": "an example very very secret key.", "nonce": "unique nonce" }

-k, --key Decrypt key

-n, --nonce Decrypt nonce

-d, --debug Turn debugging information on

-h, --help Print help information (use -h for a summary)

-V, --version Print version information

```