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/Findings/StellaOps.Findings.Ledger.WebService/Services/ExportQueryService.cs

@@ -168,7 +168,7 @@ public sealed class ExportQueryService
             NpgsqlDbType = NpgsqlDbType.Integer
         });
 
-        await using var connection = await _dataSource.OpenConnectionAsync(request.TenantId, cancellationToken).ConfigureAwait(false);
+        await using var connection = await _dataSource.OpenConnectionAsync(request.TenantId, "export", cancellationToken).ConfigureAwait(false);
         await using var command = new NpgsqlCommand(sqlBuilder.ToString(), connection)
         {
             CommandTimeout = _dataSource.CommandTimeoutSeconds