Add server skeleton.

Marechai.Server/Controllers/WeatherForecastController.cs

@@ -0,0 +1,26 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace Marechai.Server.Controllers;
+
+[ApiController]
+[Route("[controller]")]
+public class WeatherForecastController : ControllerBase
+{
+    private static readonly string[] Summaries =
+    [
+        "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
+    ];
+
+    [HttpGet(Name = "GetWeatherForecast")]
+    public IEnumerable<WeatherForecast> Get()
+    {
+        return Enumerable.Range(1, 5)
+                         .Select(index => new WeatherForecast
+                          {
+                              Date         = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
+                              TemperatureC = Random.Shared.Next(-20, 55),
+                              Summary      = Summaries[Random.Shared.Next(Summaries.Length)]
+                          })
+                         .ToArray();
+    }
+}