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: Ia53cf4e3114bc186b05381f46996b8c0d7876001
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
commitd82fe1bdf15563abcdc3999d4fb77b8f85bff40f
parent6035e4443bf97d2588a695557fec0569ac0dec6d
authorJoerg Bornemann <joerg.bornemann@qt.io>
committerJoerg Bornemann <joerg.bornemann@qt.io>
commit timeTue, 8 Sep 2026 19:25:42 +0000