build: adapt Arch Linux packaging

packaging/arch/PKGBUILD

@@ -0,0 +1,46 @@
+# Maintainer: local
+
+pkgname=qemby
+pkgver=0.0.5
+pkgrel=1
+pkgdesc="Desktop client for Emby and Jellyfin media servers"
+arch=('x86_64')
+url="https://github.com/AlanHJ/qEmby"
+license=('MIT')
+depends=(
+  'gcc-libs'
+  'glibc'
+  'mpv'
+  'qcoro'
+  'qt6-base'
+  'qt6-svg'
+  'qt6-websockets'
+  'spdlog'
+)
+makedepends=(
+  'cmake'
+  'ninja'
+  'pkgconf'
+  'qt6-tools'
+)
+source=("${pkgname}-${pkgver}.tar.gz::${url}/archive/refs/tags/v${pkgver}.tar.gz")
+sha256sums=('SKIP')
+
+build() {
+  cmake -S "${srcdir}/qEmby-${pkgver}" -B "${srcdir}/build" -G Ninja \
+    -DCMAKE_BUILD_TYPE=None \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_INSTALL_LIBDIR=lib \
+    -DQEMBY_USE_SYSTEM_DEPS=ON \
+    -DQEMBY_FETCHCONTENT_FALLBACK=OFF \
+    -DFETCHCONTENT_FULLY_DISCONNECTED=ON \
+    -DQEMBY_NATIVE_OPTIMIZE=OFF \
+    -DQEMBY_ENABLE_IPO=OFF
+  cmake --build "${srcdir}/build"
+}
+
+package() {
+  DESTDIR="${pkgdir}" cmake --install "${srcdir}/build" --prefix /usr
+  install -Dm644 "${srcdir}/qEmby-${pkgver}/LICENSE" \
+    "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
+}