Added vitest (#5)

* Moved eslint and @nuxt/eslint to devDependencies

* Added vitest to project and 1 test

* Tweaked Sonar workflow in order to run tests and coverage

* Removed offending config line

eslint.config.mjs

@@ -7,5 +7,6 @@ export default withNuxt(eslintPluginPrettierRecommended, {
   rules: {
     "@typescript-eslint/no-explicit-any": "off",
     "@typescript-eslint/no-require-imports": "off",
+    "@typescript-eslint/no-unused-vars": "warn",
   },
 });