Add AccessModifier support to ReactiveCommand

[ChrisPulman]

What kind of change does this PR introduce?

feature
closes #316

What is the current behavior?

#316

What is the new behavior?

Introduces the AccessModifier property to the ReactiveCommand attribute, allowing generated command properties to specify their access level. Updates documentation, attribute definitions, generator logic, and test usage to support internal, protected, private, and other modifiers.

What might this PR break?

New Feature

Please check if the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Other information:

[codecov]

Codecov Report

❌ Patch coverage is 52.50000% with 19 lines in your changes missing coverage. Please review.
✅ Project coverage is 40.16%. Comparing base (f283e27) to head (170c697).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...eactiveCommand/ReactiveCommandGenerator.Execute.cs	0.00%	13 Missing ⚠️
....Roslyn/Core/Extensions/AttributeDataExtensions.cs	0.00%	4 Missing ⚠️
...ators.Roslyn/ReactiveCommand/Models/CommandInfo.cs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #342      +/-   ##
==========================================
+ Coverage   39.98%   40.16%   +0.17%     
==========================================
  Files          61       61              
  Lines        3429     3466      +37     
  Branches      395      398       +3     
==========================================
+ Hits         1371     1392      +21     
- Misses       1948     1964      +16     
  Partials      110      110              

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[Copilot]

Pull request overview

This PR adds AccessModifier support to the ReactiveCommand attribute, allowing developers to control the visibility of generated command properties. The implementation enables specifying access levels (public, protected, internal, private, protected internal, private protected) for generated ReactiveCommand properties through the PropertyAccessModifier enum.

Key Changes

• Introduces PropertyAccessModifier enum with six access level values
• Adds AccessModifier property to ReactiveCommandAttribute
• Updates generator logic to map enum values to C# access modifier strings
• Updates documentation with usage examples

Reviewed changes

Copilot reviewed 20 out of 20 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/ReactiveUI.SourceGenerators.Roslyn/AttributeDefinitions.cs	Added PropertyAccessModifier enum definition and AccessModifier property to ReactiveCommandAttribute
src/ReactiveUI.SourceGenerators.Roslyn/ReactiveCommand/ReactiveCommandGenerator.Execute.cs	Implemented enum value extraction and mapping to access modifier strings for code generation
src/ReactiveUI.SourceGenerators.Roslyn/ReactiveCommand/Models/CommandInfo.cs	Extended CommandInfo record with AccessModifier parameter
src/ReactiveUI.SourceGenerators.Execute/TestViewModel.cs	Added usage example demonstrating PropertyAccessModifier.Internal
src/ReactiveUI.SourceGenerator.Tests/REACTIVECMD/*.verified.cs	Updated snapshot tests to include new PropertyAccessModifier enum in generated attributes
src/ReactiveUI.SourceGenerator.Tests/REACTIVE/*.verified.cs	Updated snapshot tests to include new PropertyAccessModifier enum in generated attributes
README.md	Added documentation for the AccessModifier feature with usage example

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[Copilot]

Pull request overview

Copilot reviewed 22 out of 22 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull request overview

Copilot reviewed 23 out of 23 changed files in this pull request and generated 2 comments.

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[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.