The documentation was missing for the example. This patch provides a
screenshot image of the application and a documentation file.
Fixes: QTBUG-128224
Task-number: QTBUG-125767
Pick-to: 6.8
Change-Id: I2aa73ea7e82eb019db84a7ce685837b89e62f300
Reviewed-by: Santhosh Kumar <santhosh.kumar.selvaraj@qt.io>
MohammadHossein Qanbari