Default DynamoDB template for functions should have CORS configured properly

### Is this related to a new or existing Amplify category?

function

### Is this related to another service?

DynamoDB

### Describe the feature you'd like to request

When using the default DynamoDB template via `amplify add function`, I get a function without proper CORS configuration.

Leading to:
```
Access to XMLHttpRequest at 'the link*' from origin 'http://localhost:3000/' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
```

### Describe the solution you'd like

The template above should be updated to have CORS properly considered.

Potentially with:
`npm install cors`
then in the code:
`app.use(cors())`

### Describe alternatives you've considered

Documentation updates but better to have this "just work".

### Additional context

_No response_

### Is this something that you'd be interested in working on?

- [ ] 👋 I may be able to implement this feature request
- [ ] ⚠️ This feature might incur a breaking change