feat(awesome-assertions): Added new project WireMock.Net.AwesomeAssertions (#1273)

* feat(awesome-assertions): Added new project WireMock.Net.AwesomeAssertions

* feat(awesome-assertions): Applied dotnet naming convention for private readonly fields

---------

Co-authored-by: Francesco Venturoli <f.venturoli@crif.com>

src/WireMock.Net.AwesomeAssertions/Assertions/WireMockANumberOfCallsAssertions.cs

@@ -0,0 +1,40 @@
+// Copyright © WireMock.Net
+
+using Stef.Validation;
+using WireMock.Server;
+
+// ReSharper disable once CheckNamespace
+namespace WireMock.FluentAssertions;
+
+/// <summary>
+/// Provides assertion methods to verify the number of calls made to a WireMock server.
+/// This class is used in the context of FluentAssertions.
+/// </summary>
+public class WireMockANumberOfCallsAssertions
+{
+    private readonly IWireMockServer _server;
+    private readonly int _callsCount;
+    private readonly AssertionChain _chain;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="WireMockANumberOfCallsAssertions"/> class.
+    /// </summary>
+    /// <param name="server">The WireMock server to assert against.</param>
+    /// <param name="callsCount">The expected number of calls to assert.</param>
+    /// <param name="chain">The assertion chain</param>
+    public WireMockANumberOfCallsAssertions(IWireMockServer server, int callsCount, AssertionChain chain)
+    {
+        _server = Guard.NotNull(server);
+        _callsCount = callsCount;
+        _chain = chain;
+    }
+
+    /// <summary>
+    /// Returns an instance of <see cref="WireMockAssertions"/> which can be used to assert the expected number of calls.
+    /// </summary>
+    /// <returns>A <see cref="WireMockAssertions"/> instance for asserting the number of calls to the server.</returns>
+    public WireMockAssertions Calls()
+    {
+        return new WireMockAssertions(_server, _callsCount, _chain);
+    }
+}