feat: Add Bun language analyzer and related functionality

- Implemented BunPackageNormalizer to deduplicate packages by name and version.
- Created BunProjectDiscoverer to identify Bun project roots in the filesystem.
- Added project files for the Bun analyzer including manifest and project configuration.
- Developed comprehensive tests for Bun language analyzer covering various scenarios.
- Included fixture files for testing standard installs, isolated linker installs, lockfile-only scenarios, and workspaces.
- Established stubs for authentication sessions to facilitate testing in the web application.

plugins/scanner/analyzers/lang/StellaOps.Scanner.Analyzers.Lang.Bun/manifest.json

@@ -0,0 +1,22 @@
+{
+  "schemaVersion": "1.0",
+  "id": "stellaops.analyzer.lang.bun",
+  "displayName": "StellaOps Bun Analyzer",
+  "version": "0.1.0",
+  "requiresRestart": true,
+  "entryPoint": {
+    "type": "dotnet",
+    "assembly": "StellaOps.Scanner.Analyzers.Lang.Bun.dll",
+    "typeName": "StellaOps.Scanner.Analyzers.Lang.Bun.BunAnalyzerPlugin"
+  },
+  "capabilities": [
+    "language-analyzer",
+    "bun",
+    "npm"
+  ],
+  "metadata": {
+    "org.stellaops.analyzer.language": "bun",
+    "org.stellaops.analyzer.kind": "language",
+    "org.stellaops.restart.required": "true"
+  }
+}