Tests: Add standalone test configuration preamble to manual tests


Add the boilerplate standalone test prelude to each manual test, so
that they can be configured with cmake or qt-cmake directly without
the qt-cmake-standalone-test script.

Task-number: QTBUG-95272
Change-Id: I2154198b77d6c415e277c67a9a7d836682d45afc
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
commitdde1a61d42d3278a2701f5bc814550db3bb75827
parent4e0fbfb7de99ee04a02b76235c89b08aab7e82b6
authorJoerg Bornemann <joerg.bornemann@qt.io>
committerJoerg Bornemann <joerg.bornemann@qt.io>
commit timeTue, 8 Sep 2026 19:25:37 +0000