Add common SceneModifier support

[Kyle-Ye]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 160 lines in your changes missing coverage. Please review.
✅ Project coverage is 26.79%. Comparing base (ff45976) to head (de87613).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ier/SceneModifier/EnvironmentWritingModifier.swift	0.00%	30 Missing ⚠️
...difier/SceneModifier/PreferenceSceneModifier.swift	0.00%	23 Missing ⚠️
...fier/SceneModifier/SceneActivationConditions.swift	0.00%	23 Missing ⚠️
Sources/OpenSwiftUI/App/Commands/Commands.swift	0.00%	20 Missing ⚠️
...ifier/SceneModifier/ValueActionSceneModifier.swift	0.00%	20 Missing ⚠️
.../SceneModifier/AppearanceActionSceneModifier.swift	0.00%	12 Missing ⚠️
...ources/OpenSwiftUI/App/Commands/CommandsList.swift	0.00%	8 Missing ⚠️
...re/Modifier/ViewModifier/ValueActionModifier.swift	0.00%	6 Missing ⚠️
...s/OpenSwiftUI/App/App/FinishLaunchTestAction.swift	0.00%	4 Missing ⚠️
...ifier/SceneModifier/EnvironmentSceneModifier.swift	0.00%	4 Missing ⚠️
... and 5 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #753      +/-   ##
==========================================
- Coverage   26.89%   26.79%   -0.10%     
==========================================
  Files         637      642       +5     
  Lines       38767    38900     +133     
==========================================
- Hits        10425    10424       -1     
- Misses      28342    28476     +134     

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