message: Add .fods exentsion for "Flat XML ODF Spreadsheet"
  This is basically an uncompressed version of .ods
diff: @@ -1035,7 +1035,7 @@ export const extensions: IFileCollection = {
  },
  {
  icon: 'excel',
  - extensions: ['xls', 'xlsx', 'xlsm', 'ods'],
  + extensions: ['xls', 'xlsx', 'xlsm', 'ods', 'fods' ],
  format: FileFormat.svg,
  },
  {
  