updated codesandbox tasks.json (#85)

test for codesandbox tasks settings

.codesandbox/tasks.json

@@ -3,5 +3,30 @@
   "buildCommand": "npm run build",
   "node": "18",
   "sandboxes": ["react-ts"],
-  "packages": ["./"]
+  "packages": ["./"],
+  // These tasks will run in order when initializing your CodeSandbox project.
+  "setupTasks": [],
+   // These tasks can be run from CodeSandbox. Running one will open a log in the app.
+  "tasks": {
+    "npm start": {
+      "name": "start dev server",
+      "command": "npm start",
+      "runAtStart": false,
+      "preview": {
+        "port": 3000
+      }
+    },
+    "npm test": {
+      "name": "run Unit Tests",
+      "command": "npm test",
+      "runAtStart": true,
+      "preview": {
+        "port": 3000
+      }
+    },
+    "npm build": {
+      "name": "npm build",
+      "command": "npm run build"
+    }
+  }
 }