[1.x] Add validate phone number methods for Langs

[milwad-dev]

Validate Germany phone number:

'phone-number' => ['required', new ValidPhoneNumber(Country::GERMANY)]

✅ IRAN
✅ ENGLAND
✅ NIGER
✅ SAUDI_ARABIA
✅ GERMANY
✅ GREECE
✅ SPAIN
✅ FRANCE
✅ INDIA
✅ INDONESIA
✅ ITALY
✅ JAPAN
✅ KOREAN
✅ RUSSIA
✅ SWEDEN
✅ TURKEY
✅ CHINA