Complete Step 2.2: Add enums for business concepts

Updated ROADMAP.md to mark Step 2.2 ("Enums erstellen") as completed, documenting the creation of `DocumentOperationType` and `ProcessingStatus` enums.

Added `DocumentOperationType` and `ProcessingStatus` enums under the `DocumentOperator.Domain.Models.Enums` namespace to represent document operations and processing statuses, respectively.

Modified `DocumentOperator.Domain.csproj` to remove the `Models\Enums\` folder from the `<ItemGroup>` section, reflecting changes in the inclusion strategy for enums.

DocumentOperator.API/ROADMAP.md

@@ -744,7 +744,7 @@ DocumentOperator.Tests/
 
 ---
 
-#### ?? Step 2.2: Enums erstellen - **NEXT**
+#### ? Step 2.2: Enums erstellen - **COMPLETED**
 
 **Aufgabe:** Aufzählungen für Business-Konzepte
 
@@ -795,9 +795,14 @@ DocumentOperator.Tests/
 - Wir haken Step 2.2 ab in ROADMAP.md
 - Weiter zu Step 2.3 (Value Objects)
 
+**Status:** ? **COMPLETED** (17.01.2025)
+- ? DocumentOperationType.cs erstellt
+- ? ProcessingStatus.cs erstellt  
+- ? Build erfolgreich
+
 ---
 
-#### ? Step 2.3: Value Objects erstellen
+#### ?? Step 2.3: Value Objects erstellen - **NEXT**
 
 **Aufgabe:** Typsichere, selbst-validierende Wert-Objekte
 

DocumentOperator.Domain/DocumentOperator.Domain.csproj

@@ -9,7 +9,6 @@
   <ItemGroup>
     <Folder Include="Common\Results\" />
     <Folder Include="Constants\" />
-    <Folder Include="Models\Enums\" />
     <Folder Include="Models\ValueObjects\" />
   </ItemGroup>
 

DocumentOperator.Domain/Models/Enums/DocumentOperationType.cs

@@ -0,0 +1,10 @@
+namespace DocumentOperator.Domain.Models.Enums;
+
+public enum DocumentOperationType
+{
+    Validate,
+    ExtractAttachments,
+    Concatenate,
+    ApplyStamp,
+    EmbedCertificate
+}

DocumentOperator.Domain/Models/Enums/ProcessingStatus.cs

@@ -0,0 +1,9 @@
+namespace DocumentOperator.Domain.Models.Enums;
+
+public enum ProcessingStatus
+{
+    Pending,
+    Processing,
+    Success,
+    Failed
+}