Add constructor.

Author: SebastianStehle

csharp/Squidex.ClientLibrary/Directory.Build.props

@@ -15,7 +15,7 @@
     <PackageTags>Squidex HeadlessCMS</PackageTags>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-    <Version>12.5.0</Version>
+    <Version>12.6.0</Version>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(GITHUB_ACTIONS)' == 'true'">

csharp/Squidex.ClientLibrary/Squidex.ClientLibrary/Management/AssetsClient.cs

@@ -125,7 +125,7 @@ public async Task UploadAssetAsync(string app, FileParameter file, AssetUploadOp
         var httpClient = _httpClientProvider.Get();
         try
         {
-            await httpClient.UploadWithProgressAsync(url, file.ToUploadFile(), options.ToOptions(file, this), cancellationToken);
+            await httpClient.UploadWithProgressAsync(url, file.ToUploadFile(), options.ToOptions(this), cancellationToken);
         }
         finally
         {

csharp/Squidex.ClientLibrary/Squidex.ClientLibrary/Management/FileParameter.cs

@@ -21,6 +21,16 @@ public partial class FileParameter
     /// </summary>
     public long? ContentLength { get; set; }
 
+#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+    public FileParameter(Stream data, string fileName, string contentType, int? contentLength)
+#pragma warning restore CS1591 // Missing XML comment for publicly visible type or member
+    {
+        Data = data;
+        FileName = fileName;
+        ContentType = contentType;
+        ContentLength = contentLength;
+    }
+
     /// <summary>
     /// Creates a new file parameter from a file info object.
     /// </summary>

csharp/Squidex.ClientLibrary/Squidex.ClientLibrary/Management/ProgressHandler.cs

@@ -164,7 +164,7 @@ public struct AssetUploadOptions
     public IAssetProgressHandler? ProgressHandler { get; set; }
 
 #pragma warning disable MA0102 // Make member readonly
-    internal UploadOptions ToOptions(FileParameter file, AssetsClient client)
+    internal UploadOptions ToOptions(AssetsClient client)
 #pragma warning restore MA0102 // Make member readonly
     {
         var result = new UploadOptions