Add SystemTextJsonMatchers (#1447)

* SystemTextJsonMatcher

* ,

* .

* new projectx

* Update test/WireMock.Net.Tests/Pact/PactTests.cs

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* Update test/WireMock.Net.Tests/WebSockets/WebSocketIntegrationTests.cs

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* Update src/WireMock.Net/WireMock.Net.csproj

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* Update src/WireMock.Net.Minimal/Properties/AssemblyInfo.cs

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* .

* more tests

* .

* .

* x

* ...

* .

* fix tests

* 0.11.0

* .

* delete jsonutils.cs

* s

* fix findings

* Apply suggestions from code review

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* Potential fix for pull request finding 'Missing Dispose call on local IDisposable'

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* JsonConverter 0.12.0

* -- tools

---------

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src/WireMock.Net.Shared/Transformers/ITransformerContext.cs

@@ -0,0 +1,34 @@
+// Copyright © WireMock.Net
+
+using JetBrains.Annotations;
+using WireMock.Handlers;
+
+namespace WireMock.Transformers;
+
+/// <summary>
+/// Defines the transformer context used to render and evaluate templates during response transformation.
+/// </summary>
+[PublicAPI]
+public interface ITransformerContext
+{
+    /// <summary>
+    /// Gets the file system handler used by the current transformer context.
+    /// </summary>
+    IFileSystemHandler FileSystemHandler { get; }
+
+    /// <summary>
+    /// Renders the specified template text using the supplied model.
+    /// </summary>
+    /// <param name="text">The template text to render.</param>
+    /// <param name="model">The model used during rendering.</param>
+    /// <returns>The rendered text.</returns>
+    string ParseAndRender(string text, object model);
+
+    /// <summary>
+    /// Evaluates the specified template text using the supplied model.
+    /// </summary>
+    /// <param name="text">The template text to evaluate.</param>
+    /// <param name="model">The model used during evaluation.</param>
+    /// <returns>The evaluated value.</returns>
+    object? ParseAndEvaluate(string text, object model);
+}