Add connection check in settings

Sesame/Common/RequestCoordinator.swift

@@ -41,6 +41,23 @@ final class RequestCoordinator: ObservableObject {
         }
     }
     
+    func checkConnection(using route: TransmissionType? = nil) {
+        guard !isPerformingRequest else {
+            return
+        }
+        isPerformingRequest = true
+        Task {
+            let route = route ?? connectionType.transmissionTypes.first!
+            let (finalResult, _) = await performChallenge(route: route)
+            DispatchQueue.main.async {
+                self.state = finalResult.result
+                self.isPerformingRequest = false
+            }
+            print("Finished connection test: \(finalResult)")
+            scheduleReturnToReadyState()
+        }
+    }
+    
     func startUnlock() {
         guard !isPerformingRequest else {
             return