Bump version to 0.5.0 and add coverage dependency

Author: alekspetrov

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "mcp-docs-service",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "description": "MCP Documentation Service - A Model Context Protocol implementation for documentation management",
   "type": "module",
   "main": "dist/index.js",
@@ -45,6 +45,7 @@
     "@types/node": "^20.10.5",
     "@typescript-eslint/eslint-plugin": "^6.15.0",
     "@typescript-eslint/parser": "^6.15.0",
+    "@vitest/coverage-v8": "^3.0.8",
     "eslint": "^8.56.0",
     "ts-node": "^10.9.2",
     "typescript": "^5.3.3",