qt-6.6: add libeditorconfig
This is the same a !160 (merged) but for the 6.6 runtime.
I confirmed this to be working correctly with the KF6 build of Kate from https://github.com/flathub/org.kde.kate/pull/47
This is the same a !160 (merged) but for the 6.6 runtime.
I confirmed this to be working correctly with the KF6 build of Kate from https://github.com/flathub/org.kde.kate/pull/47