feat: introduce useNominatim hook in NominatimSearch component

[ahennr]

Description

Refactors the NominatimSearch component so that is uses new useNominatim hook proposed in terrestris/react-util#600

Related issues or pull requests

Pull request type

• Bugfix
• Feature
• Dependency updates
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe)

Do you introduce a breaking change?

• Yes
• No

Checklist

• I understand and agree that the changes in this PR will be licensed under the
  BSD-2-Clause.
• I have followed the guidelines for contributing.
• The proposed change fits to the content of the Code of Conduct.
• I have added or updated tests and documentation, and the test suite passes (run npm test locally).
• I have added a screenshot/screencast to illustrate the visual output of my update.