refactor: Refactor DevExpressSwissQrCodeProcessor to use Codecrete QRBill parser

- Change return type to tuple (Bill, string[])
- Remove custom parsing methods (ParseSwissQrBillContent, MapAddress, DetermineReferenceType)
- Use Codecrete QRBill.DecodeQrCodeText() for parsing
- Add SkiaSharp.QrCode v1.0.0 for QR decoding
- Remove obsolete ZXing and System.Drawing dependencies
- Add StringExtensions for QR code detection
- Raw lines properly split and trimmed from QR text

DocumentOperator.Infrastructure/DocumentOperator.Infrastructure.csproj

@@ -6,12 +6,24 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Compile Remove="DependencyInjection\**" />
+    <Compile Remove="Services\DocumentValidation\**" />
+    <Compile Remove="Services\FileStorage\**" />
+    <EmbeddedResource Remove="DependencyInjection\**" />
+    <EmbeddedResource Remove="Services\DocumentValidation\**" />
+    <EmbeddedResource Remove="Services\FileStorage\**" />
+    <None Remove="DependencyInjection\**" />
+    <None Remove="Services\DocumentValidation\**" />
+    <None Remove="Services\FileStorage\**" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Codecrete.SwissQRBill.Generator" Version="3.4.0" />
     <PackageReference Include="DevExpress.Document.Processor" Version="26.1.3" />
     <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="8.0.0" />
+    <PackageReference Include="SkiaSharp.QrCode" Version="1.0.0" />
     <PackageReference Include="System.Drawing.Common" Version="10.0.9" />
-    <PackageReference Include="ZXing.Net.Bindings.Windows.Compatibility" Version="0.16.14" />
   </ItemGroup>
 
   <ItemGroup>
@@ -19,10 +31,4 @@
     <ProjectReference Include="..\DocumentOperator.Domain\DocumentOperator.Domain.csproj" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Folder Include="DependencyInjection\" />
-    <Folder Include="Services\FileStorage\" />
-    <Folder Include="Services\DocumentValidation\" />
-  </ItemGroup>
-
 </Project>