add: qt6-style-kvantum (#6536)

## Progress 

- [x] Edit packagelist
- [x] Add initial pacscript
- [ ] Contact devs
- [x] Add maintainer to pacscript

This package
[exists](https://packages.ubuntu.com/oracular/qt6-style-kvantum) in
Ubuntu oracular (thus I used this name instead of updating unmaintained
`kvantum` package, which I suppose could be removed if such operation
could be done in this repo: if there still are packages that depend on
it, `qt5-style-kvantum | qt6-style-kvantum` could be used instead). But
required dependencies exist in Debian testing and sid, and in KDE Neon.
In Ubuntu repo the package is split in `${pkgname}`, `${pkgname}-themes`
and `${pkgname}-l10n`, but I kept everything in one package for user
convenience (users probably want l10n anyway, it's just a few Kb, and
themes take a few Mb, so I doubt it can be considered a bloat and so I
avoided extra work, but if you insist I will make a split package).

packagelist

@@ -445,6 +445,7 @@ python3-vkbasalt-cli
 python3-zombie-imp
 qogir-gtk-theme-bin
 qogir-icon-theme-bin
+qt6-style-kvantum
 qt6pas
 qtile-extras-git
 qtile-git

packages/qt6-style-kvantum/.SRCINFO

@@ -0,0 +1,35 @@
+pkgbase = qt6-style-kvantum
+	pkgver = 1.1.2
+	pkgdesc = Kvantum style engine (binaries, localization and themes)
+	url = https://github.com/tsujan/Kvantum
+	depends = libc6
+	depends = libgcc-s1
+	depends = libkf6windowsystem6
+	depends = libqt6core6t64
+	depends = libqt6gui6
+	depends = libqt6svg6
+	depends = libqt6widgets6
+	depends = libstdc++6
+	depends = libx11-6
+	makedepends = cmake
+	makedepends = g++
+	makedepends = libx11-dev
+	makedepends = libxext-dev
+	makedepends = qt6-base-dev
+	makedepends = qt6-svg-dev
+	makedepends = libkf6windowsystem-dev
+	makedepends = qt6-base-dev-tools
+	conflicts = qt5-style-kvantum
+	conflicts = qt5-style-kvantum-themes
+	conflicts = qt5-style-kvantum-l10n
+	conflicts = qt6-style-kvantum-themes
+	conflicts = qt6-style-kvantum-l10n
+	compatible = ubuntu:oracular
+	compatible = debian:testing
+	compatible = debian:sid
+	compatible = neon:*
+	license = GPL-3.0-or-later
+	maintainer = bibelin <[email protected]>
+	source = https://github.com/tsujan/Kvantum/releases/download/V1.1.2/Kvantum-1.1.2.tar.xz
+
+pkgname = qt6-style-kvantum

packages/qt6-style-kvantum/qt6-style-kvantum.pacscript

@@ -0,0 +1,30 @@
+pkgname="qt6-style-kvantum"
+pkgdesc="Kvantum style engine (binaries, localization and themes)"
+url="https://github.com/tsujan/Kvantum"
+license=("GPL-3.0-or-later")
+_qt5="qt5-style-kvantum"
+conflicts=("${_qt5}" "${_qt5}-themes" "${_qt5}-l10n" "${pkgname}-themes" "${pkgname}-l10n")
+pkgver="1.1.2"
+source=("https://github.com/tsujan/Kvantum/releases/download/V${pkgver}/Kvantum-${pkgver}.tar.xz")
+sha256sum=("6d3ce7f535d7d08ffe59b04dd3f04a8ab83fe35024fe34cf56995b94f40d12a2")
+compatible=(
+  "ubuntu:oracular"
+  "debian:testing"
+  "debian:sid"
+  "neon:*"
+)
+makedepends=("cmake" "g++" "libx11-dev" "libxext-dev" "qt6-base-dev" "qt6-svg-dev" "libkf6windowsystem-dev" "qt6-base-dev-tools")
+depends=("libc6" "libgcc-s1" "libkf6windowsystem6" "libqt6core6t64" "libqt6gui6" "libqt6svg6" "libqt6widgets6" "libstdc++6" "libx11-6")
+maintainer=("bibelin <[email protected]>")
+
+build() {
+  cd "Kvantum-${pkgver}/Kvantum"
+  mkdir build && cd build
+  cmake .. -DCMAKE_INSTALL_PREFIX=/usr
+  make -j"${NCPU}"
+}
+
+package() {
+  cd "Kvantum-${pkgver}/Kvantum/build"
+  make install DESTDIR="${pkgdir}"
+}

srclist

@@ -8554,6 +8554,42 @@ pkgbase = qogir-icon-theme-bin
 
 pkgname = qogir-icon-theme-bin
 ---
+pkgbase = qt6-style-kvantum
+	pkgver = 1.1.2
+	pkgdesc = Kvantum style engine (binaries, localization and themes)
+	url = https://github.com/tsujan/Kvantum
+	depends = libc6
+	depends = libgcc-s1
+	depends = libkf6windowsystem6
+	depends = libqt6core6t64
+	depends = libqt6gui6
+	depends = libqt6svg6
+	depends = libqt6widgets6
+	depends = libstdc++6
+	depends = libx11-6
+	makedepends = cmake
+	makedepends = g++
+	makedepends = libx11-dev
+	makedepends = libxext-dev
+	makedepends = qt6-base-dev
+	makedepends = qt6-svg-dev
+	makedepends = libkf6windowsystem-dev
+	makedepends = qt6-base-dev-tools
+	conflicts = qt5-style-kvantum
+	conflicts = qt5-style-kvantum-themes
+	conflicts = qt5-style-kvantum-l10n
+	conflicts = qt6-style-kvantum-themes
+	conflicts = qt6-style-kvantum-l10n
+	compatible = ubuntu:oracular
+	compatible = debian:testing
+	compatible = debian:sid
+	compatible = neon:*
+	license = GPL-3.0-or-later
+	maintainer = bibelin <[email protected]>
+	source = https://github.com/tsujan/Kvantum/releases/download/V1.1.2/Kvantum-1.1.2.tar.xz
+
+pkgname = qt6-style-kvantum
+---
 pkgbase = qt6pas
 	gives = libqt6pas-dev
 	pkgver = 6.2.7