feat: scaffold CLI project with ClusterClient connection and System.CommandLine

src/ScadaLink.CLI/OutputFormatter.cs

@@ -0,0 +1,41 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace ScadaLink.CLI;
+
+public static class OutputFormatter
+{
+    private static readonly JsonSerializerOptions JsonOptions = new()
+    {
+        WriteIndented = true,
+        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
+        PropertyNamingPolicy = JsonNamingPolicy.CamelCase
+    };
+
+    public static void WriteJson(object? data)
+    {
+        Console.WriteLine(JsonSerializer.Serialize(data, JsonOptions));
+    }
+
+    public static void WriteError(string message, string code)
+    {
+        Console.Error.WriteLine(JsonSerializer.Serialize(new { error = message, code }, JsonOptions));
+    }
+
+    public static void WriteTable(IEnumerable<string[]> rows, string[] headers)
+    {
+        var allRows = new List<string[]> { headers };
+        allRows.AddRange(rows);
+        var widths = new int[headers.Length];
+        foreach (var row in allRows)
+            for (int i = 0; i < Math.Min(row.Length, widths.Length); i++)
+                widths[i] = Math.Max(widths[i], (row[i] ?? "").Length);
+
+        foreach (var row in allRows)
+        {
+            for (int i = 0; i < headers.Length; i++)
+                Console.Write((i < row.Length ? row[i] ?? "" : "").PadRight(widths[i] + 2));
+            Console.WriteLine();
+        }
+    }
+}