Expose variables in ComplexityContext to allow custom complexity calculation (#6262)

Co-authored-by: Simon Gabler <simon.gabler@solytic.com>

Author: sgabler

src/HotChocolate/Core/src/Execution/Pipeline/Complexity/ComplexityContext.cs

@@ -51,6 +51,11 @@ public ComplexityContext(
     /// </summary>
     public FieldNode Selection { get; }
 
+    /// <summary>
+    /// Gets the coerced variables of the current request.
+    /// </summary>
+    public IVariableValueCollection Variables => _valueCollection;
+
     /// <summary>
     /// Gets the field`s base complexity.
     /// </summary>