Add support for status_emoji_display_info

[paultyng]

Add missing field to users.profile.get, status_emoji_display_info which is a list of all the emoji's present in the status emoji or status text and details about them.

Here is an example response:

{
    "ok": true,
    "profile": {
        ...
        "status_text": "Construction!",
        "status_emoji": ":construction:",
        "status_emoji_display_info": [
            {
                "emoji_name": "construction",
                "unicode": "1f6a7",
                "display_url": "https://a.slack-edge.com/production-standard-emoji-assets/14.0/apple-large/1f6a7.png"
            }
        ],
        "status_expiration": 0,
        ...
       }
}