✨ Gateway config serving

DysonNetwork.Gateway/Configuration/ConfigurationController.cs

@@ -0,0 +1,12 @@
+using Microsoft.AspNetCore.Mvc;
+
+[ApiController]
+[Route("config")]
+public class ConfigurationController(IConfiguration configuration) : ControllerBase
+{
+    [HttpGet]
+    public IActionResult Get() => Ok(configuration.GetSection("Client").Get<Dictionary<string, object>>());
+
+    [HttpGet("site")]
+    public IActionResult GetSiteUrl() => Ok(configuration["SiteUrl"]);
+}