[LyX/master] Implement ui style selection dialog 12832

[Pavel Sanda]

On Wed, Oct 11, 2023 at 06:47:10PM +0200, Eugene Chornyi wrote:
> commit 072ba7bd2e1ac7514117fafee3143b0bfb8796eb
> Author: Eugene Chornyi <yu_jin at lyx.org>
> Date:   Wed Oct 11 20:06:52 2023 +0200
> 
>     Implement ui style selection dialog 12832
> ---
>  lib/RELEASE-NOTES                   |    4 ++
>  src/LyX.cpp                         |   10 ++++--
>  src/LyXRC.cpp                       |   15 +++++++++
>  src/LyXRC.h                         |    3 ++
>  src/frontends/qt/GuiApplication.cpp |    3 ++
>  src/frontends/qt/GuiPrefs.cpp       |   13 ++++++++
>  src/frontends/qt/ui/PrefUi.ui       |   54 ++++++++++++++++++++++++-----------
>  7 files changed, 81 insertions(+), 21 deletions(-)

Eugene, several things seem to be missing:
- incremented LYXRC_FILEFORMAT & update of prefs2prefs scripts
- documentation of the new combo in our manuals

Pavel