Add PKGBUILD for Arch Linux (AUR) packaging support

.SRCINFO

@@ -0,0 +1,13 @@
+pkgbase = codecrafters-cli
+	pkgdesc = CodeCrafters CLI - a tool for codecrafters.io exercises
+	pkgver = 34
+	pkgrel = 1
+	url = https://github.com/codecrafters-io/cli
+	arch = x86_64
+	arch = aarch64
+	license = MIT
+	depends = curl
+	source = codecrafters-cli-34.tar.gz::https://github.com/codecrafters-io/cli/releases/download/v34/v34_linux_amd64.tar.gz
+	sha256sums = SKIP
+
+pkgname = codecrafters-cli

PKGBUILD

@@ -0,0 +1,38 @@
+pkgname=codecrafters-cli
+pkgver=34
+pkgrel=1
+pkgdesc="CodeCrafters CLI - a tool for codecrafters.io exercises"
+arch=('x86_64' 'aarch64')
+url="https://github.com/codecrafters-io/cli"
+license=('MIT') # Adjust according to the project's actual license
+depends=('curl')
+
+_arch=$(uname -m)
+if [ "$_arch" == "x86_64" ]; then
+	_arch="amd64"
+elif [[ "$_arch" =~ ^(armv8|arm64|aarch64)$ ]]; then
+	_arch="arm64"
+fi
+
+source=("${pkgname}-${pkgver}.tar.gz::https://github.com/codecrafters-io/cli/releases/download/v${pkgver}/v${pkgver}_linux_${_arch}.tar.gz")
+sha256sums=('SKIP') # Replace SKIP with the actual checksum if available
+
+prepare() {
+	echo "Preparing ${pkgname} package"
+}
+
+build() {
+	echo "Building ${pkgname} package"
+}
+
+package() {
+	# Create installation directory
+	install -Dm755 "$srcdir/codecrafters" "$pkgdir/usr/local/bin/codecrafters"
+
+	# Set executable permissions for codecrafters binary
+	chmod 0755 "$pkgdir/usr/local/bin/codecrafters"
+}
+
+post_install() {
+	echo "CodeCrafters CLI installed successfully!"
+}