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: Ie1acb8d1442a50920b1f13dd2d01a1f1c9a53525
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
commitad4f26a9b9ea3c16e7446cb8af29e9dc19c8fa94
parentd8bb0db1d1aef963aa82b3b5b617e7606f8f0762
authorJoerg Bornemann <joerg.bornemann@qt.io>
committerJoerg Bornemann <joerg.bornemann@qt.io>
commit timeTue, 8 Sep 2026 19:26:07 +0000