main: hide UUP-Dump under advanced options

Source/Main.swift

@@ -19,6 +19,7 @@ import SwiftUI
 @main
 struct Main: App {
     @StateObject private var worker = Worker()
+    @AppStorage("ShowAdvancedOptions") private var showAdvancedOptions: Bool = false
 
     var body: some Scene {
         WindowGroup(id: "ESDConvert") {
@@ -31,6 +32,9 @@ struct Main: App {
                 .frame(minWidth: 800, minHeight: 400)
         }.commands {
             SidebarCommands()
+            CommandGroup(after: .sidebar) {
+                Toggle("Show Advanced Options", isOn: $showAdvancedOptions)
+            }
         }.handlesExternalEvents(matching: Set(["UUPDump"]))
     }
 }

Source/SimpleContentView.swift

@@ -18,6 +18,7 @@ import SwiftUI
 
 struct SimpleContentView: View {
     @EnvironmentObject private var worker: Worker
+    @AppStorage("ShowAdvancedOptions") private var showAdvancedOptions: Bool = false
     @State private var isConfirmCancelShown: Bool = false
     @State private var isDownloadCompleted: Bool = false
     
@@ -88,10 +89,12 @@ struct SimpleContentView: View {
                 }
             }
             HStack {
+                if showAdvancedOptions {
                     ShowWindowButtonView(id: "UUPDump") {
                         Text("All builds…")
                     }.disabled(worker.isBusy)
                         .help("Build custom installation for any build through UUP Dump.")
+                }
                 Spacer()
                 if worker.isBusy {
                     Button(role: .cancel) {