timezone() respects countrycode

[jefhar]

https://github.com/FakerPHP/Faker/pull/480/files added optional countryCode parameter, to Core and Extension classes, but not the Provider class.

What is the reason for this PR?

Duplicate existing functionality into Provider\DateTime class

• A new feature
• Fixed an issue (resolve timezone() does not respect country code #606)

Author's checklist

• Follow the Contribution Guide
• [ NA] New features and changes are documented

Summary of changes

Duplicate existing functionality into other class.

Review checklist

• All checks have passed
• Changes are approved by maintainer

[pimjansen]

Im not a fan of this since a method should be clear what it does.

However i do like the feature which we can maybe implement in a seperate method instead. @bram-pkg thoughts?

[bram-pkg]

I think this is fine, as long as it's documented in the docblock and in fakerphp.github.io.

[jefhar]

@bram-pkg The documentation already shows that timezone() takes an optional country code. The original PR missed this implementation.