List custom templates

curl 'https://api.expiryedge.com/v1/templates?organizationId=org_northwind' \
  -H "Authorization: Bearer $EXPIRYEDGE_API_KEY"

{
  "templates": [
    {
      "id": "tpl_Lic42a",
      "name": "Professional License",
      "description": "Fields tracked for every state professional license.",
      "icon": "DocumentText",
      "color": "#3b82f6",
      "fields": [
        {
          "name": "license_number",
          "label": "License Number",
          "type": "text",
          "required": true
        },
        {
          "name": "ce_hours",
          "label": "CE Hours",
          "type": "number",
          "required": false,
          "options": {
            "min": 0
          }
        },
        {
          "name": "board",
          "label": "Board",
          "type": "select",
          "required": false,
          "options": {
            "options": [
              "Dental",
              "Medical",
              "Nursing"
            ]
          }
        }
      ],
      "created_by": "u_71bXq",
      "usage_count": 3,
      "archived": false,
      "created_at": "2026-09-27T14:05:00.000Z",
      "updated_at": "2026-09-27T14:05:00.000Z"
    }
  ]
}