Update ooxml_util_pkg.pks

Added a new function within the ooxml_util_pkg specifications that will return a collection of the worksheet records that include the name of the worksheet, the sheet ID of the worksheet, and the relationship ID for the worksheet. This will allow for the ability to look-up worksheets and parse them without needing to know what the worksheet's name is in advance.

ora/ooxml_util_pkg.pks

@@ -78,6 +78,17 @@ as
 
   type t_xlsx_sheet is table of t_xlsx_cell index by varchar2(20);
   
+  type t_xlsx_sheet_attributes is record (
+      r_id    varchar2(255),
+      sheetid number,
+      name    varchar2(31)
+  );
+  
+  type t_xlsx_sheet_properties is table of t_xlsx_sheet_attributes index by pls_integer;
+  
+  -- get list of xlsx worksheets
+  function get_worksheets_list( p_xlsx in blob ) return t_xlsx_sheet_properties;
+  
   -- get docx properties
   function get_docx_properties (p_docx in blob) return t_docx_properties;