add PKGBUILD for arch repos

.gitignore

@@ -1,3 +1,4 @@
 /target
 **/*.rs.bk
 shiet.*
+/v*.tar.gz

PKGBUILD

@@ -0,0 +1,23 @@
+# Maintainer: Michael Zhang <mail@mzhang.io>
+
+pkgname=leanshot
+pkgver=0.5.0
+pkgrel=1
+pkgdesc='Screen capture for Linux.'
+url='https://git.mzhang.io/michael/leanshot'
+arch=('any')
+license=('MIT')
+makedepends=('python3')
+depends=('rust' 'libxcb' 'xcb-util-image')
+source=("https://git.mzhang.io/michael/${pkgname}/archive/v${pkgver}.tar.gz")
+sha256sums=('9883649c13e61ac93b45daf29227bda959566c004fd4f65aef8139e7d6050986')
+
+build() {
+    cd "${pkgname}"
+    cargo build --release --locked --all-features --target-dir=target
+}
+
+package() {
+    cd "${pkgname}"
+    install -Dm 755 target/release/${pkgname} -t ${pkgdir}/usr/bin
+}