feat(banking): add .nl locales

[SjurdVrancken]

Describe Pull request First, make sure you've read and are following the contribution guidelines and style guide and your code reflects that. Write up a clear and concise description of what your pull request adds or fixes and if it's an added feature explain why you think it should be included in the core.

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• Have you personally loaded this code into an updated qbcore project and checked all it's functionality? [yes] (Be honest)
• Does your code fit the style guidelines? [yes]
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