editors/neovim-qt: Update to 0.2.17

ChangeLog: https://github.com/equalsraf/neovim-qt/releases/tag/v0.2.17

Main changes since the last release:

• Allow negative linespace
• Set initial editor size properly
• Persist Gui options with QSettings
• Add GuiWindowFrameless function
• Add GuiNewWindow function
• Add Improved GuiTabline
• Add strikethrough support
• Add support for guifontwide
• Add GuiWindowOpacity command
• Support exit status to differenciate :q and :cq
• Add Font Ligature Support

Fixes:

• Antialiasing artifact fix
• Cannot map on Linux
• ContextMenu incompatible with mswin.vim
• Scale undercurl and underline with font size.
• Underline Undercurl Strikethrough Color
• Bold + Italic not applied correctly
• Underline should render with special
• Underline + Undercurl Rendering Incorrect

PR: 266718
Reported by: gspurki@gmail.com
Approved by: chuck@tuffli.net (maintainer)
MFH: 2022Q4 (many bugfixes)