New mutations to create status and dropdown columns

mutation {
  create_dropdown_column(
    board_id: 1234567890,
    id: "project_category",
    title: "Project Category",
    defaults: {
      label_limit_count: 1, 
      limit_select: true,
      labels: [
        {label: "HR"},
        {label: "R&D"},
        {label: "IT"}
      ]
    },
    description: "The project's category."
  ) {
    description
    id
    title
  }
}

mutation {
  create_status_column(
    board_id: 1234567890,
    id: "project_status",
    title: "Project Status",
    defaults: {
      labels: [
        { color: working_orange, label: "On Hold", index: 2},
        { color: done_green, label: "Done", index: 1},
        { color: sky, label: "Working On It", index: 3}
      ]
    },
    description: "The project's status."
  ) {
    description
    id
		title
  }
}