Add `LocationDependency` (#71)

[RemiBardon]

I added a more ergonomic location dependency, as introduced in #72.

Closes #71

Checklist:

• Build for
  • [x] iOS
  • [x] macOS
  • [x] macCatalyst
  • [x] tvOS
  • [x] watchOS
  • [ ] Linux
• [x] Format
• [ ] Build with strict concurrency checking
• [x] Add tests

[RemiBardon]

That was a fail, I wanted to PR on my other branch.