Define the "archivesFolder" property for the AppBuilder builder used to be build the app in the app target.

App/Sources/Options/AppOptions.swift

@@ -0,0 +1,20 @@
+import AppLibrary
+import ArgumentParser
+import Logging
+
+extension App {
+    struct Options: AppArguments, ParsableArguments {
+        
+        // MARK: Properties
+        
+        @Option(name: .shortAndLong)
+        var hostname: String = "127.0.0.1"
+        
+        @Option(name: .shortAndLong)
+        var logLevel: Logger.Level?
+
+        @Option(name: .shortAndLong)
+        var port: Int = 8080
+
+    }
+}