WPT file format

WPT file format

{
  format: "WPT",
  version: "3.0",
  view: WptConstants.VIEW_SOURCE,  // Default view: 'SOURCE', 'SHEET', 'REPORT'
  sources: [],
  sheets: [],
  reports: [],
  activeSourceId: null,
  activeSheetId: null,
  activeReportId: null,
}