Ability to add an image to a WriteOnlyWorksheet

Created originally on Bitbucket by ajeffrey (Alex Jeffrey)

Hi there, I'm not sure if this is currently possible (WriteOnlyWorksheet doesn't have an add_image method) but is there a way I can add an image to a Write-Only worksheet? I'm converting an existing regular Workbook to write_only mode for performance reasons but this is an existing feature I need to add in.