Add code examples property to schema

[iann0036]

It would be great (mostly for documentation generation) if the schema top-level could have an optional array of example model values. Something like:

{
    "typeName": "Foo::Bar::Baz",
    "properties": {
        "someprop": {
            "type": "string"
        }
    },
    ...
    "templateExamples": [
        {
            "description": "A basic example",
            "model": {
                "someprop": "An example value"
            }
        }
    ]
}

Labels: enhancement

[PatMyron]

would be nice, been maintaining minimal examples here in the meantime