[FEATURE] Add a License plate generator

[Pythonian]

Provider or Method Request or Enhancement
Request for a new provider: LicensePlateProvider or a similar name.

Describe the New Provider or Feature
This will generate random Nigerian license plate numbers using the official Nigerian formats. The provider will offer the following methods:
naija.license_plate(): which will generate a random Nigerian license plate number in the format XYZ-234MN, where:

• XYZ represents the Local Government Area (LGA) abbreviation.
• 234 is a random three-digit number.
• MN is a two-letter sequence.

Examples and Use Cases

>>> from fakernaija.faker import Faker
>>> naija = Faker()
>>> license_plate = naija.license_plate()
>>> print(f"Random license plate: {license_plate}")
'Random license plate: KWL-001AA'

Additional Context
The format follows the official standard used in Nigeria, making it useful for various applications, including testing, validations, and demonstrations in various automotive-related projects.

Documentation Update
The documentation will need to be updated to include details about the new LicensePlateProvider class and example usage of its method(s).

Resources

• https://www.nairaland.com/6634885/list-nigeria-vehicle-plate-number

Checklist:

• I have searched the existing issues and pull requests for duplicates.
• I have described the new provider or feature in detail.
• I have provided examples and use cases for this new provider or feature.