Add quantum resistance items to preferences view

Author: acb-mv

ios/MullvadVPN/TunnelManager/TunnelManager.swift

@@ -520,6 +520,16 @@ final class TunnelManager: StorePaymentObserver {
         try relayCacheTracker.refreshCachedRelays()
     }
 
+    func setQuantumResistance(_ newSetting: TunnelQuantumResistance) {
+        scheduleSettingsUpdate(
+            taskName: "Set quantum resistance",
+            modificationBlock: { settings in
+                settings.tunnelQuantumResistance = newSetting
+            },
+            completionHandler: nil
+        )
+    }
+
     // MARK: - Tunnel observeration
 
     /// Add tunnel observer.

ios/MullvadVPN/View controllers/Preferences/PreferencesDataSource.swift

@@ -166,6 +166,12 @@ final class PreferencesDataSource: UITableViewDiffableDataSource<
         }
         #endif
 
+        let quantumResistanceItem: Item = switch viewModel.quantumResistance {
+        case .automatic: .quantumResistanceAutomatic
+        case .off: .quantumResistanceOff
+        case .on: .quantumResistanceOn
+        }
+
         let obfuscationPortItem: Item = .wireGuardObfuscationPort(viewModel.obfuscationPort.portValue)
 
         #if DEBUG

ios/MullvadVPN/View controllers/Preferences/PreferencesInteractor.swift

@@ -51,6 +51,10 @@ final class PreferencesInteractor {
 
         tunnelManager.updateSettings([.relayConstraints(relayConstraints)], completionHandler: completion)
     }
+
+    func setQuantumResistance(_ newSetting: TunnelQuantumResistance) {
+        tunnelManager.setQuantumResistance(newSetting)
+    }
 }
 
 extension PreferencesInteractor: RelayCacheTrackerObserver {