chore: add aur pkg build file

resources/installer/linux/PKGBUILD

@@ -0,0 +1,30 @@
+# Maintainer: H3CoF6 <h3cof6@gmail.com>
+pkgname=weflow
+pkgver=4.3.0
+pkgrel=1
+pkgdesc="A local WeChat database decryption and analysis tool"
+arch=('x86_64')
+url="https://github.com/hicccc77/weflow"
+license=('CC-BY-NC-SA-4.0')
+depends=('alsa-lib' 'gtk3' 'nss' 'glibc')
+options=('!strip' '!debug')
+
+source=("WeFlow-${pkgver}-Setup.tar.gz::${url}/releases/download/v${pkgver}/WeFlow-${pkgver}-Setup.tar.gz"
+  "weflow.desktop"
+  "icon.png")
+
+sha256sums=('2859aca2f57c42f4d1516ed229613623c57d3e78b9cb152fcb2b9c1096ab9340'
+            '2cf03766f5c2f1915ad136f060a66f5788ed32b06defe1956e406c73d7e733b7'
+            'b1c412d9c08ae683e231173c16fe73958ad1063f14c9b3852373385e4fcb6f33')
+
+package() {
+  install -dm755 "${pkgdir}/opt/${pkgname}"
+
+  cp -a "${srcdir}/WeFlow-${pkgver}-Setup/"* "${pkgdir}/opt/${pkgname}/"
+
+  install -dm755 "${pkgdir}/usr/bin"
+  ln -s "/opt/${pkgname}/weflow" "${pkgdir}/usr/bin/${pkgname}"
+
+  install -Dm644 "${srcdir}/weflow.desktop" -t "${pkgdir}/usr/share/applications/"
+  install -Dm644 "${srcdir}/icon.png" "${pkgdir}/usr/share/pixmaps/${pkgname}.png"
+}