Add back Info.plist and use it for version in swift package

Package.swift

@@ -16,6 +16,14 @@ let package = Package(
             name: "DockUtil",
             dependencies: [
                 .product(name: "ArgumentParser", package: "swift-argument-parser"),
+            ],
+            linkerSettings: [
+                .unsafeFlags([
+                    "-Xlinker", "-sectcreate",
+                    "-Xlinker", "__TEXT",
+                    "-Xlinker", "__info_plist",
+                    "-Xlinker", "Sources/Resources/Info.plist"
+                ])
             ]
         ),
         .testTarget(

Sources/DockUtil/DockUtil.swift

@@ -10,7 +10,7 @@ import Foundation
 import ArgumentParser
 import Darwin
 
-let VERSION = "3.0.2"
+let VERSION = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String ?? ""
 var gv = 0 // Global verbosity
 
 struct DockAdditionOptions {

Sources/Resources/Info.plist

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleIdentifier</key>
+	<string>dockutil.cli.tool</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>dockutil</string>
+	<key>CFBundleShortVersionString</key>
+	<string>3.0.3</string>
+	<key>CFBundleVersion</key>
+	<string>3.0.3</string>
+</dict>
+</plist>