Add PHP Analyzer Plugin and Composer Lock Data Handling

- Implemented the PhpAnalyzerPlugin to analyze PHP projects.
- Created ComposerLockData class to represent data from composer.lock files.
- Developed ComposerLockReader to load and parse composer.lock files asynchronously.
- Introduced ComposerPackage class to encapsulate package details.
- Added PhpPackage class to represent PHP packages with metadata and evidence.
- Implemented PhpPackageCollector to gather packages from ComposerLockData.
- Created PhpLanguageAnalyzer to perform analysis and emit results.
- Added capability signals for known PHP frameworks and CMS.
- Developed unit tests for the PHP language analyzer and its components.
- Included sample composer.lock and expected output for testing.
- Updated project files for the new PHP analyzer library and tests.

src/Cli/StellaOps.Cli/Services/Models/AdvisoryAi/AdvisoryAiModels.cs

@@ -11,6 +11,13 @@ internal enum AdvisoryAiTaskType
     Remediation
 }
 
+internal enum AdvisoryOutputFormat
+{
+    Table,
+    Json,
+    Markdown
+}
+
 internal sealed class AdvisoryPipelinePlanRequestModel
 {
     public AdvisoryAiTaskType TaskType { get; init; }