Use the new #Preview macro

[NikolaiMadlener]

Use the new #Preview macro

♻️ Current situation & Problem

As partially described in #23, currently all previews of views are written the old way using the PreviewProvider protocol.
The new #Preview macro, introduced with iOS 17, should be used in every view instead.

⚙️ Release Notes

• Update all previews of the TemplateApplication using the new #Preview` macro.
• Update minimum deployment targets to iOS 17.0

📚 Documentation

• No need for previews.

✅ Testing

• No need for previews.

📝 Code of Conduct & Contributing Guidelines

By submitting creating this pull request, you agree to follow our Code of Conduct and Contributing Guidelines:

• I agree to follow the Code of Conduct and Contributing Guidelines.

[NikolaiMadlener]

Just a very small update to take advantage of the new #Previews macro as I've been working on the TemplateApplication these days anyway.

Also, #23 mentions that some views in the app crash or are non-existent. I found all previews working fine while updating to the macro, so I guess that information is outdated @PSchmiedmayer?

I'm also thinking about a solution for StanfordSpezi/Spezi#63 atm.

[codecov]

Codecov Report

Merging #44 (3a56947) into main (e88698d) will increase coverage by 1.00%.
The diff coverage is 83.34%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #44      +/-   ##
==========================================
+ Coverage   81.59%   82.58%   +1.00%     
==========================================
  Files          35       35              
  Lines         999      987      -12     
==========================================
  Hits          815      815              
+ Misses        184      172      -12     

Files	Coverage Δ
TemplateApplication/Account/AccountButton.swift	100.00% <100.00%> (ø)
...mplateApplication/Account/AccountSetupHeader.swift	100.00% <ø> (ø)
TemplateApplication/Account/AccountSheet.swift	97.83% <ø> (+12.93%)	⬆️
...eApplication/Contributions/ContributionsList.swift	100.00% <ø> (ø)
...emplateApplication/Contributions/PackageCell.swift	86.49% <ø> (ø)
TemplateApplication/Home.swift	100.00% <ø> (ø)
TemplateApplication/MockUpload/MockUpload.swift	92.31% <ø> (ø)
...lateApplication/Onboarding/AccountOnboarding.swift	88.89% <ø> (ø)
TemplateApplication/Onboarding/Consent.swift	94.12% <ø> (ø)
...eApplication/Onboarding/HealthKitPermissions.swift	95.56% <ø> (ø)
... and 8 more

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e88698d...3a56947. Read the comment docs.

[PSchmiedmayer]

Sorry for the delay in the review and thank you for the great additions and bringing #Preview in the template app @NikolaiMadlener!

The PR looks good and is well structured, I only had a few smaller comments and suggestions for improvements across different files.

Let me know and feel free to re-request a review once you have resolved the different comments and/or if you have any questions 👍

[PSchmiedmayer]

Thank you for the chances, this looks great! Thanks for all the work and effort that went into the PR @NikolaiMadlener! 🚀