added base diagnose, is not working, yet, still contains test objects

Moonlight.ApiServer/Helpers/DiagnoseHelper.cs

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+namespace Moonlight.ApiServer.Helpers;
+
+public class DiagnoseHelper
+{
+    
+}

Moonlight.ApiServer/Implementations/Diagnose/CoreDiagnoseProvider.cs

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+using System.Text;
+using Moonlight.ApiServer.Interfaces;
+using Moonlight.ApiServer.Models.Diagnose;
+
+namespace Moonlight.ApiServer.Implementations.Diagnose;
+
+public class CoreDiagnoseProvider : IDiagnoseProvider
+{
+    public async Task<DiagnoseEntry> GetFiles()
+    {
+        return new DiagnoseFile()
+        {
+            GetContent = () => Encoding.UTF8.GetBytes("hello world")
+        };
+    }
+}

Moonlight.ApiServer/Implementations/Diagnose/TestProvider.cs

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+namespace Moonlight.ApiServer.Implementations.Diagnose;
+
+public class TestProvider
+{
+    
+}

Moonlight.ApiServer/Interfaces/IDiagnoseProvider.cs

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+using Moonlight.ApiServer.Models.Diagnose;
+
+namespace Moonlight.ApiServer.Interfaces;
+
+public interface IDiagnoseProvider
+{
+    public Task<DiagnoseEntry> GetFiles();
+}

Moonlight.ApiServer/Models/Diagnose/DiagnoseDirectory.cs

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+namespace Moonlight.ApiServer.Models.Diagnose;
+
+public class DiagnoseDirectory : DiagnoseEntry
+{
+    public List<DiagnoseEntry> Children { get; set; } = new();
+    public override bool IsDirectory => true;
+}

Moonlight.ApiServer/Models/Diagnose/DiagnoseEntry.cs

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+namespace Moonlight.ApiServer.Models.Diagnose;
+
+public abstract class DiagnoseEntry
+{
+    public string Name { get; set; } = "";
+    
+    public abstract bool IsDirectory { get; }
+}

Moonlight.ApiServer/Models/Diagnose/DiagnoseFile.cs

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+namespace Moonlight.ApiServer.Models.Diagnose;
+
+public class DiagnoseFile : DiagnoseEntry
+{
+    public Func<byte[]> GetContent = () => [];
+    
+    public override bool IsDirectory => false;
+}