Move magic item execution out of API file

[bgoncal]

Summary

Screenshots

Link to pull request in Documentation repository

Documentation: home-assistant/companion.home-assistant#

Any other notes

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 83 lines in your changes missing coverage. Please review.

Project coverage is 45.33%. Comparing base (c038f38) to head (f217489).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
Sources/Shared/MagicItem/MagicItem.swift	0.00%	79 Missing ⚠️
Sources/Shared/API/AppTriggerSource.swift	0.00%	2 Missing ⚠️
Sources/Shared/API/Models/Action.swift	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3507      +/-   ##
==========================================
- Coverage   45.51%   45.33%   -0.18%     
==========================================
  Files         224      225       +1     
  Lines       13353    13390      +37     
==========================================
- Hits         6078     6071       -7     
- Misses       7275     7319      +44     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.