worksheet_view: Create worksheet view
In rsheets/linen: Spreadsheet Data Structures

Create worksheet "view"

1 2	worksheet_view(sheet, xr = NULL, filter = NULL, header = NULL, data = NULL)

`sheet`	A worksheet object, created by `worksheet` (possibly via the `googlesheets` or `rexcel` packages).
`xr`	A `cell_limits` object describing the range of the worksheet to view.
`filter`	filter
`header`	Header data
`data`	Additional data fields, as a list. This can be anything but is passed by value not by reference so clever things won't work well here. Currently I'm using this in `jailbreakr::split_metadata` to hold a reference to cells that contain metadata about the sheet.