List print templates

Templates are ordered by creation date, from oldest to newest.

$ curl -H "Authorization: Bearer api-key" https://api.planadoapp.com/v2/print/templates | jq
{
  "print_templates": [
    {
      "uuid": "1ed8feba-b855-6290-a8b0-1ef2a1c15efe",
      "output_format": "pdf",
      "filename": "job_layout.html",
    },
    {
      "uuid": "1ed8feba-f9eb-6350-a8b0-1ef2a1c15efe",
      "name": "Review",
      "output_format": "html",
      "filename": "custom_layout.html",
    },
    ...
  ]
}

Table 1. Fields of `print_templates` elements
Field	Type	JSON Type	Can be `null`	Description
`uuid`	UUID	String	No	Unique identifier
`name`	String	String	Yes	Print template name
`output_format`	String	String	No	Format of a printed file
`filename`	String	String	No	Print template filename