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: I898282b5c1c369e9408231bad479ba21320e9e99
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
commit2d6d0932ae094ec10119c0f0eedd8625786492e9
parentb7d2814b974cd479462a2468035a60a9dd93cc8d
authorJoerg Bornemann <joerg.bornemann@qt.io>
committerJoerg Bornemann <joerg.bornemann@qt.io>
commit timeTue, 8 Sep 2026 19:25:56 +0000