feat(BankNameFromCard):added core method body

example/example_phone_number.dart

@@ -15,7 +15,6 @@ void main() {
   print(operatorDetail?.base); // کشوری
   print(operatorDetail?.type); // SimCartType.both
 
-
   /// you can also use this methods as String extension method
 
   // phone number validator

lib/src/core/get_bank_name_from_card_number/get_bank_name_from_card_number.dart

@@ -1,6 +1,22 @@
+import 'package:dart_persian_tools/src/constants/get_bank_name_from_card_number/constants.dart';
+
 import 'models.dart';
 
+/// checks the [cardNumber] is a valid bank card and returns the [Bank] info
+/// if its not a valid card or not related to a bank
+/// it will returns null
 Bank? getBankNameFromCardNumber(String cardNumber) {
+  if (cardNumber.length == 16) {
+    /// split the card number and cut the init code from it
+    final initCode = cardNumber.substring(0, 6);
+
+    final findBank = bankInformation.firstWhere(
+      (element) => element?.initCode == initCode,
+      orElse: () => null,
+    );
+
+    if (findBank != null) return findBank;
+  }
   return null;
 }
 

lib/src/core/phone_number/phone_number.dart

@@ -17,7 +17,6 @@ String getPhonePrefix(String phoneNumber) {
   return '';
 }
 
-
 /// find information such as province, type and model of [phoneNumber]
 /// this function used the [getPhonePrefix] to find out the [phoneNumber] prefix number and
 /// used the [phoneNumberValidator] function to validate the [phoneNumber].

test/test_get_bank_name_from_card_number.dart

@@ -4,7 +4,8 @@ import 'package:test/test.dart';
 void main() {
   group('test get_bank_name_from_card_number.dart', () {
     test('test getBankNameFromCardNumber method', () {
-      expect(getBankNameFromCardNumber('6037701689095443')?.name, 'بانک کشاورزی');
+      expect(
+          getBankNameFromCardNumber('6037701689095443')?.name, 'بانک کشاورزی');
       expect(getBankNameFromCardNumber('6219861034529007')?.name, 'بانک سامان');
       expect(getBankNameFromCardNumber('6219861034529007')?.name, 'بانک سامان');