feat : RDB 기능 추가 (라이브러리, base 코드 구현)

MMOTestServer/ServerLib/RDB/Handlers/HelperHandler.cs

@@ -0,0 +1,22 @@
+using System.Text.Json;
+
+namespace ServerLib.RDB.Handlers;
+
+public static class HandlerHelper
+{
+    public static string Success<T>(T data)
+    {
+        return JsonSerializer.Serialize(new Response<T> { Success = true, Data = data });
+    }
+
+    public static string Error(string message)
+    {
+        return JsonSerializer.Serialize(new Response<object> { Success = false, Error = message });
+    }
+
+    public static T? Deserialize<T>(string payload)
+    {
+        try { return JsonSerializer.Deserialize<T>(payload); }
+        catch { return default; }
+    }
+}

MMOTestServer/ServerLib/RDB/Handlers/Response.cs

@@ -0,0 +1,8 @@
+namespace ServerLib.RDB.Handlers;
+
+public class Response<T>
+{
+    public bool    Success { get; init; }
+    public T?      Data    { get; init; }
+    public string? Error   { get; init; }
+}