Add ISO 4217 numeric currency code faker in Currency faker group

[panilya]

Source: https://en.wikipedia.org/wiki/ISO_4217#Active_codes_(list_one)

[what-the-diff]

PR Summary

• New method addition in Currency class
  A new method named numericCode() has been integrated into the Currency class. This feature aims at providing an efficient way for handling numerical codes relevant to particular currencies.

• Update in Currency Configuration
  The currency.yml file, used for setting up currency configurations, has been augmented with a numeric_code entry. This assists in the adaptation of the newly added method in the class and contributes to maintaining the consistency of the codebase.

• Test Case for the New Method
  To ensure that the newly added numericCode() method functions as expected, a test case has been designed and can be found in the CurrencyTest class. This practice is crucial for improving the reliability of the overall system.

[bodiam]

Nice! Thanks @panilya !

[kingthorin]

Before the next actual release you're going to need to do a find/replace in the code base to ensure things say the proper @SInCE version (2.1.1 or 2.2.0)

[bodiam]

@kingthorin yeah, I saw that, that's fine. I'll probably remove all 2.1.1 references, and call it 2.2.0.

[kingthorin]

Great, just wanted to make sure it was on the radar 😁

[bodiam]

@kingthorin it is. Doesn't mean I won't forget it though. I'll make a task for this!

[bodiam]

@kingthorin #1113