Add ImageReference, ManagedViewUpdate, and Tiles

[Supereg]

Add ImageReference, ManagedViewUpdate, and Tiles

♻️ Current situation & Problem

This PR moves some infrastructure from other Spezi packages to SpeziViews (this includes SpeziScheduler, NAMS and SpeziDevices).

⚙️ Release Notes

• Added ImageReference as a way to pass around image resources including system image names.
• Added ManagedViewUpdate as a mechanism to manually trigger view updates include based on dates
• Added SimpleTile and TileHeader as new layout components.

📚 Documentation

Reorganized some of the sections of the documentation catalog.

✅ Testing

Added snapshot testing for the new layout components.
We added an UI test to verify the behavior of @ManagedViewUpdate.

📝 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.

[codecov]

Codecov Report

Attention: Patch coverage is 78.68852% with 39 lines in your changes missing coverage. Please review.

Project coverage is 80.32%. Comparing base (0cdbcc6) to head (7eb5c52).

Files with missing lines	Patch %	Lines
Sources/SpeziViews/Model/ImageReference.swift	36.67%	19 Missing ⚠️
Sources/SpeziViews/Views/Tiles/SimpleTile.swift	69.45%	11 Missing ⚠️
Sources/SpeziViews/Views/Tiles/TileHeader.swift	88.89%	6 Missing ⚠️
...rces/SpeziViews/Properties/ManagedViewUpdate.swift	93.62%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #45      +/-   ##
==========================================
- Coverage   81.12%   80.32%   -0.80%     
==========================================
  Files          44       49       +5     
  Lines        1308     1458     +150     
==========================================
+ Hits         1061     1171     +110     
- Misses        247      287      +40     

Flag	Coverage Δ
	80.32% <78.69%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ources/SpeziPersonalInfo/Fields/NameFieldRow.swift	88.00% <ø> (-1.65%)	⬇️
...urces/SpeziPersonalInfo/Fields/NameTextField.swift	77.28% <ø> (-0.98%)	⬇️
...es/SpeziValidation/Views/VerifiableTextField.swift	93.94% <ø> (ø)
...eziViews/Environment/DefaultErrorDescription.swift	100.00% <ø> (ø)
...Views/Environment/ProcessingDebounceDuration.swift	50.00% <ø> (ø)
Sources/SpeziViews/Views/Button/AsyncButton.swift	66.95% <ø> (-0.82%)	⬇️
Sources/SpeziViews/Views/Text/MarkdownView.swift	69.82% <ø> (ø)
...s/SpeziViews/Views/Tiles/CompletedTileHeader.swift	100.00% <100.00%> (ø)
...rces/SpeziViews/Properties/ManagedViewUpdate.swift	93.62% <93.62%> (ø)
Sources/SpeziViews/Views/Tiles/TileHeader.swift	88.89% <88.89%> (ø)
... and 2 more

... and 6 files with indirect coverage changes

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