Add list-lsps snippets

snippets/csharp/ConnectingLsp.cs

@@ -17,6 +17,20 @@ public class ConnectingLspSnippets
         // ANCHOR_END: get-lsp-info
     }
 
+    public void ListLsps(BlockingBreezServices sdk)
+    {
+        // ANCHOR: list-lsps
+        try
+        {
+            var availableLsps = sdk.ListLsps();
+        }
+        catch (Exception)
+        {
+            // Handle error
+        }
+        // ANCHOR_END: list-lsps
+    }
+
     public void ConnectLsp(BlockingBreezServices sdk, string? lspId)
     {
         // ANCHOR: connect-lsp