Save Simple Array Values

Sometimes we just want to save an array of things as the value for an input (ex. a Multi Select). Instead of making a List or a Set, it should be like

```
{
"@context": "http://www.w3.org/ns/anno.jsonld",
"@id": "https://devstore.rerum.io/v1/id/65035e833e3748bad735fe00",
"@type": "Annotation",
"body": {
"references": {
"value": [
"https://devstore.rerum.io/v1/id/614cf580e74876243131a620"
]
}
},
"target": "https://devstore.rerum.io/v1/id/65035e820a269d63c513df10"
}
```

We have support for a `deer-input-type` attribute that knows what to do with Lists and Sets, let's make one for SimpleArray