Accommodate sp_BlitzCache's new 'duplicate' sort order

[VladDBA]

With the October release, Brent introduced @sortorder = 'duplicate' for sp_BlitzCache. Adding this to PSBlitz would require:

• PSBlitz.ps1 - adding it in the main sp_BlitzCache block
• Excel report - adding either a new sheet or a table in an existing sheet for it
• HTML report - adding a new page or table in an existing page for it