Add a markdown render

As LLMs have a better understanding of markdown, it would be nice to have a Markdown render that supports rendering the result JSON to markdown directly.

eg:
render:
```json
{"newAge":102,"newName":"this is my new name Alice"}

```

to 

```
| newName | newAge |
| ------- | ------ |
| this is my new name Alice | 102.00  |
```
