Fix name typo and update error handling

Author: webprofusion-chrisc

src/Certify.CLI/CertifyCLI,StoredCredentials.cs renamed to src/Certify.CLI/CertifyCLI.StoredCredentials.cs

@@ -25,25 +25,32 @@ internal async Task UpdateStoredCredential(string[] args)
             var cred = new StoredCredential
             {
                 StorageKey = storageKey,
-                DateCreated = DateTime.Now,
+                DateCreated = DateTime.UtcNow,
                 ProviderType = credentialType,
                 Secret = secretValue,
                 Title = title
             };
 
-            var result = await _certifyClient.UpdateCredentials(cred);
-
-            if (result != null)
+            try
             {
-                var resultObject = new { Status = "OK", Message = "Credential updated", StorageKey = result?.StorageKey };
-                var output = JsonConvert.SerializeObject(resultObject, Formatting.Indented);
-                Console.WriteLine(output);
+                var result = await _certifyClient.UpdateCredentials(cred);
+                if (result != null)
+                {
+
+                    var resultObject = new { Status = "OK", Message = "Credential updated", StorageKey = result?.StorageKey };
+                    var output = JsonConvert.SerializeObject(resultObject, Formatting.Indented);
+                    Console.WriteLine(output);
+                }
+                else
+                {
+                    var resultObject = new { Status = "Error", Message = "Credential update failed" };
+                    var output = JsonConvert.SerializeObject(resultObject, Formatting.Indented);
+                    Console.WriteLine(output);
+                }
             }
-            else
+            catch (Exception ex)
             {
-                var resultObject = new { Status = "Error", Message = "Credential update failed" };
-                var output = JsonConvert.SerializeObject(resultObject, Formatting.Indented);
-                Console.WriteLine(output);
+                Console.WriteLine($"Error updating credentials: {ex.Message}");
             }
         }
 
@@ -55,5 +62,10 @@ internal async Task ListStoredCredentials(string[] args)
 
             Console.WriteLine(output);
         }
+        private void WriteOutput(object resultObject)
+        {
+            var output = JsonConvert.SerializeObject(resultObject, Formatting.Indented);
+            Console.WriteLine(output);
+        }
     }
 }