Add prompt prefix window

Legba.Engine/Enums.cs

@@ -20,6 +20,7 @@ public enum Llm
     public enum Role
     {
         Unspecified,
+        System,
         User,
         Assistant
     }

Legba.Engine/ExtensionMethods.cs

@@ -1,4 +1,6 @@
-using System.Text;
+using Legba.Engine.Models;
+using System.Collections.ObjectModel;
+using System.Text;
 
 namespace Legba.Engine;
 
@@ -17,4 +19,18 @@ public static void AppendLineIfNotEmpty(this StringBuilder sb, string text)
             sb.AppendLine(text);
         }
     }
+
+    public static Settings.Llm LlmWithModel(this ObservableCollection<Settings.Llm> llms, 
+        Settings.Model model)
+    {
+        foreach (var llm in llms)
+        {
+            if (llm.Models.Contains(model))
+            {
+                return llm;
+            }
+        }
+
+        throw new ArgumentException($"Model {model} not found in the list of LLMs.");
+    }
 }

Legba.Engine/Legba.Engine.csproj

@@ -1,16 +1,25 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net8.0-windows</TargetFramework>
+	<UseWPF>true</UseWPF>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-    <Version>1.2.0.0</Version>
+    <Version>2.0.0.0</Version>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="LiteDB" Version="5.0.17" />
-    <PackageReference Include="Microsoft.Extensions.Http" Version="8.0.0" />
-    <PackageReference Include="ScottLilly.CSharpExtender" Version="2.1.0" />
+    <Folder Include="Models\OpenAi\" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="LiteDB" Version="5.0.21" />
+    <PackageReference Include="Microsoft.CodeAnalysis" Version="4.13.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.13.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.4" />
+    <PackageReference Include="Microsoft.Extensions.Http" Version="9.0.4" />
+    <PackageReference Include="ScottLilly.CSharpExtender" Version="2.2.0" />
+    <PackageReference Include="System.Text.Json" Version="9.0.4" />
   </ItemGroup>
 
 </Project>