(feat): add baseCountryCode option for normalizing phonenumbers

[spoxies]

Adds baseCountryCode option, when it is defined the (E.164) normalized phonenumbers are resolved.

Usage

window.ContactsX.find(function(success) {
  console.log(success);
}, function (error) {
  console.error(error);
}, {
  fields: {
    phoneNumbers: true
  },
  baseCountryCode : 'DE' // ISO 3166-1 alpha-2 
});

[
    {
        "id": "1",
        "rawId": "1",
        "displayName": "Test",
        "phoneNumbers": [
            {
                "id": "1",
                "value": "+31 6 1234567",
                "normalized": "+3161234567",
                "type": "mobile"
            },
            {
                "id": "2",
                "value": "0 151 12345",
                "normalized": "+4915112345",
                "type": "home"
            }
        ],
        "emails": [],
        "firstName": "Test "
    }
]

Implements/uses:

• Android Google - libphonenumber
• iOS marmelroy - PhoneNumberKit

Reason

Having native code implement/run complicated libraries seemed (more) efficient. The reason for implementing this here is because Android used to return the NORMALIZED_NUMBER. But it does not anymore and taking it further with E.164 has advantages.

Other

I do not have a strong opinion if this functionality belongs here perse, it might be nice to have. But there are certainly arguments against it. Feel free to ignore/close this PR/proposal.

[EinfachHans]

Amazing work 🥳 Thank you! Some small comments added

[EinfachHans]

Thanks 😊 Released in V2.1.0