Create a handler to show the full information about the current config

[mativm02]

We need a handler to show the full information about the current config of a component. It would behave in a similar way as /config?field= does but without the need for filtering by fields. For example:

{
    "ListenPort": {
        "config_field": "listen_port",
        "env": "APP_LISTENPORT",
        "value": 8000,
        "comment": "ListenPort is the port where the server will run",
        "obfuscated": false
    },
    "LogFile": {
        "config_field": "log_file",
        "env": "APP_LOGFILE",
        "value": "./config.go",
        "comment": "",
        "obfuscated": false
    },
}

The key of each JSON object would be the name of the field within the JSON struct