feat: :sparkles: add a setting for rest time

[mike011]

Description

In settings you can now pick a rest time in minutes and seconds. These values are stored to the AppStorage under restTimeMinutes and restTimeSeconds. SwiftUI currently doesn’t have a time picker that doesn’t show AM / PM. I could’ve used a UIKIT picker, but I thought this looked good enough.

Related Issue

https://github.com/heyjaywilson/peakfit/issues/22

How Has This Been Tested?

Picked various values from the settings screen and varied they are still set on relaunch and navigating back and forth.

Screenshots (if appropriate):

https://github.com/user-attachments/assets/e1bff3f0-ddd2-4e95-ada1-7663ca13bcbf

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Developer tooling (fix or improve developer tooling)

Checklist:

• [x] My code follows the code style of this project.
• [] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.

[mike011]

Nice work. Just some files that shouldn't be committed.

Oops, sorry about that, should be fixed now.