Use ILRepack to include Microsoft.OpenApi as internal (#1290)

* .

* Use ILRepack to include Microsoft.OpenApi as internal

* ...

* OpenApiSpecificationVersion

* .

* 080

* 4

src/WireMock.Net.OpenApiParser/Models/OpenApiMapper.cs

@@ -0,0 +1,25 @@
+// Copyright © WireMock.Net
+
+using System.Linq;
+using RamlToOpenApiConverter;
+using MicrosoftOpenApiDiagnostic = Microsoft.OpenApi.Reader.OpenApiDiagnostic;
+
+namespace WireMock.Net.OpenApiParser.Models;
+
+internal static class OpenApiMapper
+{
+    internal static OpenApiDiagnostic? Map(MicrosoftOpenApiDiagnostic? openApiDiagnostic)
+    {
+        if (openApiDiagnostic == null)
+        {
+            return null;
+        }
+
+        return new OpenApiDiagnostic
+        {
+            Errors = openApiDiagnostic.Errors.Select(e => new OpenApiError(e.Pointer, e.Message)).ToList(),
+            Warnings = openApiDiagnostic.Warnings.Select(e => new OpenApiError(e.Pointer, e.Message)).ToList(),
+            SpecificationVersion = (OpenApiSpecificationVersion)openApiDiagnostic.SpecificationVersion
+        };
+    }
+}