Add 'ConstantExpectedAttribute' type

src/PolySharp.SourceGenerators/EmbeddedResources/System.Diagnostics.CodeAnalysis.ConstantExpectedAttribute.cs

@@ -0,0 +1,30 @@
+// <auto-generated/>
+#pragma warning disable
+#nullable enable annotations
+
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    /// <summary>
+    /// Indicates that the specified method parameter expects a constant.
+    /// </summary>
+    /// <remarks>
+    /// This can be used to inform tooling that a constant should be used as an argument for the annotated parameter.
+    /// </remarks>
+    [global::System.AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
+    [global::System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage]
+    internal sealed class ConstantExpectedAttribute : global::System.Attribute
+    {
+        /// <summary>
+        /// Indicates the minimum bound of the expected constant, inclusive.
+        /// </summary>
+        public object? Min { get; set; }
+
+        /// <summary>
+        /// Indicates the maximum bound of the expected constant, inclusive.
+        /// </summary>
+        public object? Max { get; set; }
+    }
+}