Add national days API to calendar

Calendar/Service/Controllers/NationalDaysController.cs

@@ -0,0 +1,21 @@
+using ChrisKaczor.HomeMonitor.Calendar.Service.Models.NationalDays;
+using Microsoft.AspNetCore.Mvc;
+using RestSharp;
+
+namespace ChrisKaczor.HomeMonitor.Calendar.Service.Controllers;
+
+[Route("national-days")]
+[ApiController]
+public class NationalDaysController(IConfiguration configuration, RestClient restClient) : ControllerBase
+{
+    [HttpGet("today")]
+    public async Task<ActionResult<Response>> GetToday()
+    {
+        var restRequest = new RestRequest(configuration["Calendar:NationalDays:Url"]);
+        restRequest.AddHeader("X-Api-Key", configuration["Calendar:NationalDays:Key"] ?? string.Empty);
+
+        var response = await restClient.GetAsync<Response>(restRequest);
+
+        return Ok(response?.Data.Where(d => d.Type == "day"));
+    }
+}