QmlDesigner: Add help script to run tst_bauhaus & store results in file

tests/auto/qml/qmldesigner/bauhaustests/run_test.pl

+#!/usr/bin/perl
+
+($second, $minute, $hour, $dayOfMonth, $month, $yearOffset, $dayOfWeek, $dayOfYear, $daylightSavings) = localtime();
+$filename = "$yearOffset-$month-$dayOfMonth.log";
+
+system("git rev-parse HEAD >$filename");
+system("./tst_bauhaus >$filename");