Add phone validation for Tango country codes

Author: superfortune-passion

src/lib/isMobilePhone.js

@@ -67,6 +67,7 @@ const phones = {
   'en-RW': /^(\+?250|0)?[7]\d{8}$/,
   'en-SG': /^(\+65)?[3689]\d{7}$/,
   'en-SL': /^(\+?232|0)\d{8}$/,
+  'en-TO': /^(\+?676)?[0-9]{5,7}$/,
   'en-TZ': /^(\+?255|0)?[67]\d{8}$/,
   'en-UG': /^(\+?256|0)?[7]\d{8}$/,
   'en-US': /^((\+1|1)?( |-)?)?(\([2-9][0-9]{2}\)|[2-9][0-9]{2})( |-)?([2-9][0-9]{2}( |-)?[0-9]{4})$/,