Need to add GTS scalar types, supported by GTS spec itself

[Artifizer]

for example:

{
"$schema": "...",
"$id": "gts://gts.spec.type.scalar.duration.v1~",
"title": "Duration",
"type": "string",
"format": "duration"
"pattern": "^P(?!$)(\d+Y)?(\d+M)?(\d+D)?(T(\d+H)?(\d+M)?(\d+(\.\d+)?S)?)?$"
"description": "ISO 8601 duration"
}
Later you can ref it as:

....
"properties": {
    "timeout": {
        "$ref": "gts://gts.spec.type.scalar.duration.v1~"
    }
}
...