Skeleton CLI utility 'dpk'

Package.swift

@@ -2,9 +2,17 @@
 import PackageDescription
 
 let package = Package(
-    name: "darwin-apk",
-    targets: [
-        .executableTarget(
-            name: "darwin-apk"),
-    ]
+  name: "darwin-apk",
+  dependencies: [
+    .package(url: "https://github.com/apple/swift-argument-parser", from: "1.5.0"),
+  ],
+  targets: [
+    .executableTarget(
+      name: "dpk",
+      dependencies: [
+        .product(name: "ArgumentParser", package: "swift-argument-parser"),
+      ],
+      path: "Sources/dpk-cli"
+    ),
+  ]
 )