Display HTTP statuses stats

[gilach]

Test run results should contain data visualization of HTTP statuses received, as this data is already provided by backend:

{
    ...
    "errors": 0,
    "timeouts": 0,
    "mismatches": 0,
    "non2xx": 61,
    "resets": 0,
    "1xx": 0,
    "2xx": 0,
    "3xx": 61,
    "4xx": 0,
    "5xx": 0,
    "statusCodeStats": {
        "302": {
            "count": 61
        }
    },
   ...
}