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/Extensions/DictionaryExtensions.cs

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+// Copyright © WireMock.Net
+
+using System.Collections;
+using System.Diagnostics.CodeAnalysis;
+using Stef.Validation;
+
+namespace WireMock.Extensions;
+
+internal static class DictionaryExtensions
+{
+    public static bool TryGetStringValue(this IDictionary dictionary, string key, [NotNullWhen(true)] out string? value)
+    {
+        Guard.NotNull(dictionary);
+        
+        if (dictionary[key] is string valueIsString)
+        {
+            value = valueIsString;
+            return true;
+        }
+
+        var valueToString = dictionary[key]?.ToString();
+        if (valueToString != null)
+        {
+            value = valueToString;
+            return true;
+        }
+
+        value = default;
+        return false;
+    }
+}

src/WireMock.Net.Minimal/Extensions/StringExtensions.cs

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+using System.Globalization;
+
+namespace WireMock.Extensions;
+
+internal static class StringExtensions
+{
+    // See https://andrewlock.net/why-is-string-gethashcode-different-each-time-i-run-my-program-in-net-core/
+    public static string GetDeterministicHashCodeAsString(this string str)
+    {
+        unchecked
+        {
+            int hash1 = (5381 << 16) + 5381;
+            int hash2 = hash1;
+
+            for (int i = 0; i < str.Length; i += 2)
+            {
+                hash1 = ((hash1 << 5) + hash1) ^ str[i];
+                if (i == str.Length - 1)
+                {
+                    break;
+                }
+
+                hash2 = ((hash2 << 5) + hash2) ^ str[i + 1];
+            }
+
+            int result = hash1 + hash2 * 1566083941;
+
+            return result.ToString(CultureInfo.InvariantCulture).Replace('-', '_');
+        }
+    }
+}

src/WireMock.Net.Minimal/Extensions/TimeSettingsExtensions.cs

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+// Copyright © WireMock.Net
+
+using System;
+using WireMock.Models;
+
+namespace WireMock.Extensions;
+
+internal static class TimeSettingsExtensions
+{
+    public static bool IsValid(this ITimeSettings? settings)
+    {
+        if (settings == null)
+        {
+            return true;
+        }
+
+        var now = DateTime.Now;
+        var start = settings.Start ?? now;
+        DateTime end;
+
+        if (settings.End != null)
+        {
+            end = settings.End.Value;
+        }
+        else if (settings.TTL != null)
+        {
+            end = start.AddSeconds(settings.TTL.Value);
+        }
+        else
+        {
+            end = DateTime.MaxValue;
+        }
+
+        return now >= start && now <= end;
+    }
+}