Add envelope finalize endpoint

EnvelopeGenerator.Server/EnvelopeGenerator.Server/Controllers/EnvelopeController.cs

@@ -5,6 +5,7 @@ using MediatR;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Newtonsoft.Json;
+using EnvelopeGenerator.Application.PdfSigning;
 
 namespace EnvelopeGenerator.Server.Controllers;
 
@@ -123,4 +124,17 @@ public class EnvelopeController : ControllerBase
         return Ok(result);
     }
 
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="command"></param>
+    /// <returns></returns>
+    [Authorize(AuthenticationSchemes = AuthScheme.Sender)]
+    [HttpPost("finalize")]
+    public async Task<IActionResult> FinalizeEnvelopeAsync([FromQuery] FinalizeEnvelopeCommand command)
+    {
+        await _mediator.Send(command.Authorized(User.GetId()));
+        return Ok();
+    }
+
 }