Enhance DTOs and controller with documentation and checks

- Added XML documentation comments to properties in `EnvelopeHistoryDto.cs`.
- Changed `EnvelopeId` to non-nullable in `ReadHistoryQuery.cs` and added `Status` parameter for filtering.
- Removed unused `using` directives in `HistoryController.cs` and updated `GetAllAsync` to filter histories by `Status`, returning `NotFound` if no results are found.

EnvelopeGenerator.GeneratorAPI/Controllers/HistoryController.cs

@@ -1,5 +1,4 @@
-using DigitalData.EmailProfilerDispatcher.Abstraction.Entities;
-using EnvelopeGenerator.Application.Contracts.Services;
+using EnvelopeGenerator.Application.Contracts.Services;
 using EnvelopeGenerator.Application.Histories.Queries.Read;
 using EnvelopeGenerator.Extensions;
 using Microsoft.AspNetCore.Authorization;
@@ -7,7 +6,6 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Caching.Memory;
 using static EnvelopeGenerator.Common.Constants;
 
-
 namespace EnvelopeGenerator.GeneratorAPI.Controllers;
 
 /// <summary>
@@ -109,8 +107,6 @@ public class HistoryController : ControllerBase
     [Authorize]
     public async Task<IActionResult> GetAllAsync([FromQuery] ReadHistoryQuery history)
     {
-
-
         bool withReceiver = false;
         bool withSender = false;
 
@@ -130,6 +126,12 @@ public class HistoryController : ControllerBase
             withSender: withSender,
             withReceiver: withReceiver);
 
-        return Ok(histories);
+        if(history.Status is not null)
+            histories = histories.Where(h => h.Status == (int)history.Status);
+
+        if (!histories.Any())
+            return NotFound();
+
+        return Ok((history.OnlyLast ?? false) ? histories.MaxBy(h => h.AddedWhen) : histories);
     }
 }