Add iban and docs

Author: martijn00

CHANGELOG.md

@@ -37,6 +37,7 @@
 * Add transform
 * Add debounce
 * Add retry
+* Add iban
 
 
 ## 10.0.1

README.md

@@ -107,6 +107,7 @@ Available built-in use-case validators include:
 - `FormBuilderValidators.path()` - requires the field's to be a valid file or folder path.
 - `FormBuilderValidators.portNumber()` - requires the field's to be an valid port number.
 - `FormBuilderValidators.macAddress()` - requires the field's to be an valid MAC address.
+- `FormBuilderValidators.iban()` - requires the field's to be an valid IBAN.
 
 ### Supported languages
 

lib/l10n/intl_en.arb

@@ -49,5 +49,6 @@
   "endsWithErrorText": "Value must end with {value}.",
   "containsErrorText": "Value must contain {value}.",
   "betweenErrorText": "Value must be between {min} and {max}.",
-  "valueInListErrorText": "Value must be in list."
+  "valueInListErrorText": "Value must be in list.",
+  "ibanErrorText": "Value must be a valid IBAN."
 }