IDA 9.2+ support

[cross-of-north]

Starting from version 9.2 IDA uses Qt 6.

IDA developers provide the compatibility layer for Python scripts using Qt 5, but no compatibility layer included for C++ plugins compiled for Qt 5, so the latest official Labeless release refuses to load with IDA 9.2 and 9.3 (at least on Windows - it fails to locate Qt 5 DLLs).

I've created a PR with code changes required to build Labeless IDA plugin along with Qt 6 and the latest IDA SDK.
Until (if ever) these changes are integrated in main Labeless repo, the prebuilt IDA 9.2+ compatible plugin DLL can be downloaded here.