Added borders countries from Afghanistan to Laos

As we have agreed last week, I've added the borders countries information from Afghanistan to Laos, by using the CCA3 code, in this way:

```
    {
        "name": "Afghanistan",
        "nativeName": "Af\u0121\u0101nist\u0101n",
        "tld": [".af"],
        "cca2": "AF",
        "ccn3": "004",
        "cca3": "AFG",
        "currency": ["AFN"],
        "callingCode": ["93"],
        "capital": "Kabul",
        "altSpellings": ["AF", "Af\u0121\u0101nist\u0101n"],
        "relevance": "0",
        "region": "Asia",
        "subregion": "Southern Asia",
        "language": ["Pashto", "Dari"],
        "languagesCodes": ["ps", "uz", "tk"],
        "translations": {
            "de": "Afghanistan",
            "en": "Afghanistan",
            "es": "Afganist\u00e1n",
            "fr": "Afganist\u00e1n",
            "it": "Afghanistan",
            "ja": "\u30a2\u30d5\u30ac\u30cb\u30b9\u30bf\u30f3",
            "nl": "Afghanistan"
        },
        "population": 25500100,
        "latlng": [33, 65],
        "demonym": "Afghan",
	"borders":["IRN","PAK","TKM","UZB","TJK","CHN"]
    }
```

Thanks.