Update Qt to 6.9.1

[Megamouse]

• Updates Qt to 6.9.1
• Remove obselete cirrus builds
• Windows: deploy ffmpeg (otherwise the video player and video sink won't work)
• Windows: use newer windeployqt6 instead of windeployqt

[digant73]

it could be interesting to see if the new windeployqt6 is finally able to copy the qt libs from the base folder to something like <base_folder>/qt6/libs

[Megamouse]

that's not how it works. you'd have to add this to PATH, or manually load the libs in the main function

[digant73]

So that tool is still very limited. As far it is described it was expected to also allow to change the links for the needed .dll / .so in the executable allowing to properly organize the dll / so in the desired folders

[Megamouse]

Which description?

[digant73]

Which description?

I was just referring to windeployqt's user guide, not anything wrong in this PR. windeployqt could be easily more smart than it was (and probably it is even on this newer version windeployqt6).

[Megamouse]

You can actually just move the dlls to whatever folder you like if you add that folder to PATH.
But since we don't add anything to PATH and have no idea where you put rpcs3 as a user, we can't just move them with windeployqt

[digant73]

yeah I know that. Just a non sense to me to provide options like --libdir "$(TargetDir)qt6\libs while the links in the binary will not match the target folder.