Add GraphQL Schema matching (#964)

* Add GrapQLMatcher

* tests

* x

* .

* .

* RequestMessageGraphQLMatcher

* .

* more tests

* tests

* ...

* ms

* .

* more tests

* GraphQL.NET !!!

* .

* executionResult

* nw

* sonarcloud

src/WireMock.Net/RequestBuilders/IBodyRequestBuilder.cs

@@ -10,7 +10,7 @@ namespace WireMock.RequestBuilders;
 /// <summary>
 /// The BodyRequestBuilder interface.
 /// </summary>
-public interface IBodyRequestBuilder : IRequestMatcher
+public interface IBodyRequestBuilder : IGraphQLRequestBuilder
 {
     /// <summary>
     /// WithBody: IMatcher
@@ -103,4 +103,12 @@ public interface IBodyRequestBuilder : IRequestMatcher
     /// <param name="func">The form-urlencoded values.</param>
     /// <returns>The <see cref="IRequestBuilder"/>.</returns>
     IRequestBuilder WithBody(Func<IDictionary<string, string>?, bool> func);
+
+    /// <summary>
+    /// WithBodyAsGraphQLSchema: Body as GraphQL schema as a string.
+    /// </summary>
+    /// <param name="body">The GraphQL schema.</param>
+    /// <param name="matchBehaviour">The match behaviour. (Default is <c>MatchBehaviour.AcceptOnMatch</c>).</param>
+    /// <returns>The <see cref="IRequestBuilder"/>.</returns>
+    IRequestBuilder WithBodyAsGraphQLSchema(string body, MatchBehaviour matchBehaviour = MatchBehaviour.AcceptOnMatch);
 }