Create swift package

Sources/Cargo/Commands/Version.swift

@@ -0,0 +1,23 @@
+import ArgumentParser
+import SwiftLintFramework
+
+extension Cargo {
+    struct Version: ParsableCommand {
+        @Flag(help: "Display full version info")
+        var verbose = false
+
+        static let configuration = CommandConfiguration(abstract: "Display the current version of Cargo")
+
+        static var value: String { "TODO" }
+
+        func run() throws {
+            if verbose, let buildID = ExecutableInfo.buildID {
+                print("Version:", Self.value)
+                print("Build ID:", buildID)
+            } else {
+                print(Self.value)
+            }
+            ExitHelper.successfullyExit()
+        }
+    }
+}