Create WireMock.Net.MimePart project (#1300)

* Create WireMock.Net.MimePart project

* .

* REFACTOR

* ILRepack

* --

* ...

* x

* x

* .

* fix

* public class MimePartMatcher

* shared

* min

* .

* <!--<DelaySign>true</DelaySign>-->

* Update README.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

src/WireMock.Net.Minimal/Util/CultureInfoExtensions.cs

@@ -0,0 +1,44 @@
+// Copyright © WireMock.Net
+
+using System;
+using System.Globalization;
+
+namespace WireMock.Util;
+
+internal static class CultureInfoUtils
+{
+    public static readonly CultureInfo CultureInfoEnUS = new("en-US");
+
+    public static CultureInfo Parse(string? value)
+    {
+        if (value is null)
+        {
+            return CultureInfo.CurrentCulture;
+        }
+
+        try
+        {
+#if !NETSTANDARD1_3
+            if (int.TryParse(value, out var culture))
+            {
+                return new CultureInfo(culture);
+            }
+#endif
+            if (string.Equals(value, nameof(CultureInfo.CurrentCulture), StringComparison.OrdinalIgnoreCase))
+            {
+                return CultureInfo.CurrentCulture;
+            }
+
+            if (string.Equals(value, nameof(CultureInfo.InvariantCulture), StringComparison.OrdinalIgnoreCase))
+            {
+                return CultureInfo.InvariantCulture;
+            }
+
+            return new CultureInfo(value);
+        }
+        catch
+        {
+            return CultureInfo.CurrentCulture;
+        }
+    }
+}