(ifcbrk) Add SearchUsersAsync (#1556)

src/Discord.Net.Rest/API/Rest/SearchGuildMembersParams.cs

@@ -0,0 +1,9 @@
+#pragma warning disable CS1591
+namespace Discord.API.Rest
+{
+    internal class SearchGuildMembersParams
+    {
+        public string Query { get; set; }
+        public Optional<int> Limit { get; set; }
+    }
+}