Fix AmbiguousMatchException when deleting package (#177)

Fixes #176

Author: alexanderfast

src/BaGet/Controllers/PackagePublishController.cs

@@ -1,9 +1,8 @@
-using System;
+using System;
 using System.Threading;
 using System.Threading.Tasks;
 using BaGet.Core.Services;
 using BaGet.Extensions;
-using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Logging;
 using NuGet.Versioning;
@@ -77,6 +76,7 @@ public async Task Upload(CancellationToken cancellationToken)
             }
         }
 
+        [HttpDelete]
         public async Task<IActionResult> Delete(string id, string version, CancellationToken cancellationToken)
         {
             if (!NuGetVersion.TryParse(version, out var nugetVersion))
@@ -99,6 +99,7 @@ public async Task<IActionResult> Delete(string id, string version, CancellationT
             }
         }
 
+        [HttpPost]
         public async Task<IActionResult> Relist(string id, string version)
         {
             if (!NuGetVersion.TryParse(version, out var nugetVersion))