Implement IBAN generation

[antfroger]

Description

Implement IBAN generation. Generated IBANs are random but valid.
IBAN format is based on the country format of the IBAN.
Support many countries, based on PHP's faker implementation.

p := New().Payment()
iban := p.Iban()

Are you trying to fix an existing issue?

#168

Go Version

$ go version
go version go1.22.2 darwin/amd64

Go Tests

$ go test
2024/04/22 21:10:24 Error while requesting https://loremflickr.com/300/200 : request failed
2024/04/22 21:10:25 Error while creating a temp file: temp file creation failed
2024/04/22 21:10:25 Error while requesting https://randomuser.me : request failed
2024/04/22 21:10:25 Error while creating a temp file: temp file creation failed
PASS
ok  	github.com/jaswdr/faker/v2	3.600s

[jaswdr]

Hey @antfroger thank you very much for the PR, my only general comment would be related to code organization, instead of having part of the code in payment.go/payment_test.go can you move everything to the iban.go/iban_test.go files?

This way we keep logic related to IBAN's in their proper files. Then you can use IBAN's methods in Payment to also generate IBAN's from Payment instances.

[jaswdr]

@antfroger LGTM, I merged and release it under v2.3.0. Congratulations on your first PR 🎉