Read multiple sheets of data from the Spreadsheet File node

Allow for the Spreadsheet File node to generate multiple outputs from either: all sheets, a list of sheets, or sheets that match a pattern.

Allow for the Spreadsheet File node to generate a single output array of the list of sheets in a spreadsheet.

For later reference: How to read a list of sheets from a Spreadsheet - #3 by tylerc

@tylerc don’t forget to hit the vote button :slightly_smiling_face: