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/RequestBuilders/Request.cs

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+// Copyright © WireMock.Net and mock4net by Alexandre Victoor
+
+// This source file is based on mock4net by Alexandre Victoor which is licensed under the Apache 2.0 License.
+// For more details see 'mock4net/LICENSE.txt' and 'mock4net/readme.md' in this project root.
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using Stef.Validation;
+using WireMock.Matchers;
+using WireMock.Matchers.Request;
+
+namespace WireMock.RequestBuilders;
+
+/// <summary>
+/// The Request Builder
+/// </summary>
+public partial class Request : RequestMessageCompositeMatcher, IRequestBuilder
+{
+    private readonly IList<IRequestMatcher> _requestMatchers;
+
+    /// <summary>
+    /// The link back to the Mapping.
+    /// </summary>
+    public IMapping Mapping { get; set; } = null!;
+
+    /// <summary>
+    /// Creates this instance.
+    /// </summary>
+    /// <returns>The <see cref="IRequestBuilder"/>.</returns>
+    public static IRequestBuilder Create()
+    {
+        return new Request(new List<IRequestMatcher>());
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Request"/> class.
+    /// </summary>
+    /// <param name="requestMatchers">The request matchers.</param>
+    private Request(IList<IRequestMatcher> requestMatchers) : base(requestMatchers)
+    {
+        _requestMatchers = Guard.NotNull(requestMatchers);
+    }
+
+    /// <summary>
+    /// Gets the request message matchers.
+    /// </summary>
+    /// <typeparam name="T">Type of IRequestMatcher</typeparam>
+    /// <returns>A List{T}</returns>
+    public IList<T> GetRequestMessageMatchers<T>() where T : IRequestMatcher
+    {
+        return new ReadOnlyCollection<T>(_requestMatchers.OfType<T>().ToList());
+    }
+
+    /// <summary>
+    /// Gets the request message matcher.
+    /// </summary>
+    /// <typeparam name="T">Type of IRequestMatcher</typeparam>
+    /// <returns>A RequestMatcher</returns>
+    public T? GetRequestMessageMatcher<T>() where T : IRequestMatcher
+    {
+        return _requestMatchers.OfType<T>().FirstOrDefault();
+    }
+
+    /// <summary>
+    /// Gets the request message matcher.
+    /// </summary>
+    /// <typeparam name="T">Type of IRequestMatcher</typeparam>
+    /// <returns>A RequestMatcher</returns>
+    public T? GetRequestMessageMatcher<T>(Func<T, bool> func) where T : IRequestMatcher
+    {
+        return _requestMatchers.OfType<T>().FirstOrDefault(func);
+    }
+
+    internal bool TryGetProtoBufMatcher([NotNullWhen(true)] out IProtoBufMatcher? protoBufMatcher)
+    {
+        protoBufMatcher = GetRequestMessageMatcher<RequestMessageProtoBufMatcher>()?.Matcher;
+        if (protoBufMatcher != null)
+        {
+            return true;
+        }
+
+        var bodyMatcher = GetRequestMessageMatcher<RequestMessageBodyMatcher>();
+        protoBufMatcher = bodyMatcher?.Matchers?.OfType<IProtoBufMatcher>().FirstOrDefault();
+        return protoBufMatcher != null;
+    }
+
+    private IRequestBuilder Add<T>(T requestMatcher) where T : IRequestMatcher
+    {
+        foreach (var existing in _requestMatchers.OfType<T>().ToArray())
+        {
+            _requestMatchers.Remove(existing);
+        }
+
+        _requestMatchers.Add(requestMatcher);
+        return this;
+    }
+}