Add more screenshots from other modules

[Supereg]

Add more screenshots from other modules

♻️ Current situation & Problem

This PR adds screenshots to highlight more modules of the Spezi framework ecosystem. We added screenshots for SpeziAccount, SpeziViews and SpeziLLM.

⚙️ Release Notes

• Added additional screenshots to highlight Spezi modules
• Fixed smaller documentation issues.

📝 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

All modified and coverable lines are covered by tests ✅

Comparison is base (d56ed07) 91.53% compared to head (b9b5ca5) 91.53%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #94   +/-   ##
=======================================
  Coverage   91.53%   91.53%           
=======================================
  Files          31       31           
  Lines         661      661           
=======================================
  Hits          605      605           
  Misses         56       56           

Files	Coverage Δ
...rces/Spezi/Dependencies/DependencyCollection.swift	97.30% <ø> (ø)

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