Use PHP ISO Codes in the "CountryCode" rule

Since we now have PHP ISO Codes as a dependency[1], it doesn't make
sense to keep dealing with this data ourselves.

[1]: 04b2722

Signed-off-by: Henrique Moody <[email protected]>

docs/rules/CountryCode.md

@@ -1,10 +1,12 @@
 # CountryCode
 
 - `CountryCode()`
-- `CountryCode(string $set)`
+- `CountryCode("alpha-2"|"alpha-3"|"numeric" $set)`
 
 Validates whether the input is a country code in [ISO 3166-1][] standard.
 
+**This rule requires [sokil/php-isocodes][] and [php-isocodes-db-only][] to be installed.**
+
 ```php
 v::countryCode()->validate('BR'); // true
 
@@ -15,13 +17,13 @@ v::countryCode('numeric')->validate('504'); // true
 
 This rule supports the three sets of country codes:
 
-- ISO 3166-1 alpha-2 (`'alpha-2'` or `CountryCode::ALPHA2`)
-- ISO 3166-1 alpha-3 (`'alpha-3'` or `CountryCode::ALPHA3`)
-- ISO 3166-1 numeric (`'numeric'` or `CountryCode::NUMERIC`).
+- ISO 3166-1 alpha-2: `alpha-2`
+- ISO 3166-1 alpha-3: `alpha-3`
+- ISO 3166-1 numeric: `numeric`
+
+When no set is defined, the rule uses `'alpha-2'` (`CountryCode::ALPHA2`).
 
-When no set is defined the rule uses `'alpha-2'` (`CountryCode::ALPHA2`).
 
-This rules uses data from [iso-codes][].
 
 ## Categorization
 
@@ -46,4 +48,5 @@ See also:
 - [Tld](Tld.md)
 
 [ISO 3166-1]: https://wikipedia.org/wiki/ISO_3166-1
-[iso-codes]: https://salsa.debian.org/iso-codes-team/iso-codes
+[sokil/php-isocodes]: https://github.com/sokil/php-isocodes
+[php-isocodes-db-only]: https://github.com/sokil/php-isocodes-db-only

library/ChainedValidator.php

@@ -73,7 +73,8 @@ public function containsAny(array $needles, bool $strictCompareArray = false): C
 
  public function countable(): ChainedValidator;
 
- public function countryCode(?string $set = null): ChainedValidator;
+ /** @param "alpha-2"|"alpha-3"|"numeric" $set */
+ public function countryCode(string $set = 'alpha-2'): ChainedValidator;
 
  public function currencyCode(): ChainedValidator;