[PhoneNumberManager] validate and format phoneNumber using PhoneNumberKit

PhoneNumberManager.swift

import Foundation
import PhoneNumberKit

enum Format {
    case e164
    case national
    case international
}

class PhoneNumberManager {
    
    class func validate(_ number: String, with format: Format) throws -> String {
        let phoneKit = PhoneNumberKit()
        let phoneNumber = try phoneKit.parse(number, ignoreType: true)
        switch format {
        case .e164:
            return phoneKit.format(phoneNumber, toType: .e164)
        case .international:
            return phoneKit.format(phoneNumber, toType: .international)
        case .national:
            return phoneKit.format(phoneNumber, toType: .national)
        }
    }
}