aws dynamodb get-item toggle "View DynamoDB JSON"

**Is your feature request related to a problem? Please describe.**


**Describe the solution you'd like**
A JSON output switch `aws dynamodb get-item help`

**Describe alternatives you've considered**

I'm not sure how to transform something like:

```
{
"id": {
"S": "210.23.22.2"
},
"created": {
"N": "1643333754"
},
"expires": {
"N": "1643333814"
},
"color": {
"S": "#cc0000"
}
}
```

into

```
{
"id": "210.23.22.2",
"created": 1643333754,
"expires": 1643333814,
"color": "#cc0000"
}
```
with something like `jq`, but it must be possible?