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/TASKS.md

@@ -3,3 +3,4 @@
 | Task ID | State | Notes |
 | --- | --- | --- |
 | `SCANNER-CLI-0001` | DONE (2025-11-12) | Ruby verbs now consume the persisted `RubyPackageInventory`, warn when inventories are missing, and docs/tests were refreshed per Sprint 138. |
+| `CLI-AIAI-31-001` | DOING (2025-11-22) | Building `stella advise summarize` with JSON/Markdown outputs and citation rendering (Sprint 0201 CLI I). |