feat(example): add handling of incoming call event

examples/WebApi/Controllers/HandleIncomingIceEventController.cs

@@ -0,0 +1,39 @@
+using Microsoft.AspNetCore.Mvc;
+using Sinch;
+using Sinch.Voice.Calls.Actions;
+using Sinch.Voice.Calls.Instructions;
+using Sinch.Voice.Hooks;
+
+namespace WebApiExamples.Controllers
+{
+    [ApiController]
+    [Route("voice")]
+    public class HandleIncomingIceEventController : ControllerBase
+    {
+        private readonly ISinchClient _sinchClient;
+
+        public HandleIncomingIceEventController(ISinchClient sinchClient)
+        {
+            _sinchClient = sinchClient;
+        }
+
+        [HttpPost]
+        [Route("ice-event")]
+        public IActionResult HandleEvent([FromBody] IncomingCallEvent incomingCallEvent)
+        {
+            var response = new CallEventResponse()
+            {
+                Action = new Hangup(),
+                Instructions = new List<IInstruction>()
+                {
+                    new Say()
+                    {
+                        Text = "Thank you for calling Sinch! This call will now end.",
+                        Locale = "en-US"
+                    }
+                }
+            };
+            return Ok(response);
+        }
+    }
+}