add plugin

Author: rachelgshaffer

src/ProjectTemplates/Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/ClientApp/.eslintrc.json

@@ -3,5 +3,8 @@
     "parserOptions": {
         "ecmaVersion": 6,
         "sourceType": "module"
-    }
+    },
+    "plugins": [
+        "@typescript-eslint"
+    ]
 }