The functionality of providing multiple ActiveX controls in a single
process server should be covered in a documentation snippet.
In order to keep the use case's code in source, the example was moved to
tests/manual.
Pick-to: 6.5
Change-Id: I2633637e8202aadc7798ba5816a61ec1743f0b03
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>