Add ExcludeStatics API (#117905)

Add ExcludeStatics API. This property on
RequiresUnreferencedCode and RequiresDynamicCode
indicates that the annotation should not apply to static
members, allowing annotating a type (and suppressing
warnings from virtual members) without also annotating
the static members.

Author: sbomer

src/libraries/System.Private.CoreLib/src/System/Diagnostics/CodeAnalysis/RequiresDynamicCodeAttribute.cs

@@ -30,6 +30,11 @@ public RequiresDynamicCodeAttribute(string message)
             Message = message;
         }
 
+        /// <summary>
+        /// When set to true, indicates that the annotation should not apply to static members.
+        /// </summary>
+        public bool ExcludeStatics { get; set; }
+
         /// <summary>
         /// Gets a message that contains information about the usage of dynamic code.
         /// </summary>

src/libraries/System.Private.CoreLib/src/System/Diagnostics/CodeAnalysis/RequiresUnreferencedCodeAttribute.cs

@@ -31,6 +31,11 @@ public RequiresUnreferencedCodeAttribute(string message)
             Message = message;
         }
 
+        /// <summary>
+        /// When set to true, indicates that the annotation should not apply to static members.
+        /// </summary>
+        public bool ExcludeStatics { get; set; }
+
         /// <summary>
         /// Gets a message that contains information about the usage of unreferenced code.
         /// </summary>

src/libraries/System.Runtime/ref/System.Runtime.cs

@@ -9029,13 +9029,15 @@ public RequiresAssemblyFilesAttribute(string message) { }
     public sealed partial class RequiresDynamicCodeAttribute : System.Attribute
     {
         public RequiresDynamicCodeAttribute(string message) { }
+        public bool ExcludeStatics { get; set; }
         public string Message { get { throw null; } }
         public string? Url { get { throw null; } set { } }
     }
     [System.AttributeUsageAttribute(System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method, Inherited=false)]
     public sealed partial class RequiresUnreferencedCodeAttribute : System.Attribute
     {
         public RequiresUnreferencedCodeAttribute(string message) { }
+        public bool ExcludeStatics { get; set; }
         public string Message { get { throw null; } }
         public string? Url { get { throw null; } set { } }
     }