Fix building for Catalyst

OTP/Views/AddKeyButton.swift

@@ -24,11 +24,13 @@ struct AddKeyButton: View {
     var body: some View {
         Menu {
             Section {
+                #if !targetEnvironment(macCatalyst)
                 Button {
                     isPresentingScanner = true
                 } label: {
                     Label("Scan QR", systemImage: "qrcode.viewfinder")
                 }
+                #endif
                 Button {
                     isPresentingAddURLSheet = true
                 } label: {
@@ -55,11 +57,14 @@ struct AddKeyButton: View {
         }
         .menuStyle(.borderlessButton)
         .accessibilityLabel("Add Key")
+        #if !targetEnvironment(macCatalyst)
         .sheet(isPresented: $isPresentingScanner, content: self.scannerSheet)
+        #endif
         .sheet(isPresented: $isPresentingManualAddFormSheet, content: self.manualAddFormSheet)
         .sheet(isPresented: $isPresentingAddURLSheet, content: self.addURLSheet)
     }
     
+    #if !targetEnvironment(macCatalyst)
     private func scannerSheet() -> some View {
         AddQRView() { (action) in
             self.isPresentingScanner = false
@@ -71,6 +76,7 @@ struct AddKeyButton: View {
             }
         }
     }
+    #endif
     
     private func addURLSheet() -> some View {
         NavigationView {

OTP/Views/AddQRView.swift

@@ -5,6 +5,7 @@
 //  Created by Shadowfacts on 8/22/21.
 //
 
+#if !targetEnvironment(macCatalyst)
 import SwiftUI
 import CodeScanner
 import OTPKit
@@ -93,3 +94,4 @@ struct AddQRView_Previews: PreviewProvider {
         AddQRView() { (_) in }
     }
 }
+#endif