Add server api definition

MusicCast.Net.Api.Server/Controllers/MainController.cs

@@ -0,0 +1,59 @@
+using Microsoft.AspNetCore.Mvc;
+using MusicCast.Net.Api.Server.Models;
+
+namespace MusicCast.Net.Api.Server.Controllers;
+
+[ApiController]
+[Route("/YamahaExtendedControl/v1/main/")]
+public class MainController
+{
+    [HttpGet]
+    [Route("getStatus")]
+    public GetStatusResponse GetStatus()
+    {
+        throw new NotImplementedException();
+    }
+
+    [HttpGet]
+    [Route("getSignalInfo")]
+    public GetSignalInfoResponse GetSignalInfo()
+    {
+        throw new NotImplementedException();
+    }
+
+    [HttpGet]
+    [Route("setVolume")]
+    public BaseResponse SetVolume([FromQuery] int volume)
+    {
+        throw new NotImplementedException();
+    }
+
+    [HttpGet]
+    [Route("prepareInputChange")]
+    public BaseResponse PrepareInputChange([FromQuery] string input)
+    {
+        throw new NotImplementedException();
+    }
+
+    [HttpGet]
+    [Route("setInput")]
+    public BaseResponse SetInput([FromQuery] string input)
+    {
+        throw new NotImplementedException();
+    }
+
+    [EndpointSummary("Shutdown after the specified interval in minutes")]
+    [HttpGet]
+    [Route("setSleep")]
+    public BaseResponse SetSleep([FromQuery] int sleep)
+    {
+        throw new NotImplementedException();
+    }
+
+    [HttpGet]
+    [Route("setPower")]
+    public BaseResponse SetPower([FromQuery] PowerState power)
+    {
+        throw new NotImplementedException();
+    }
+}