feature: adjust the ratelimit for reactions (#1108)

* feature: adjust the ratelimit for reactions

allows users to add reactions quickly

* fix: don't force DEBUG_LIMITS

* fix: undefined behavior using DateTime on intel architerctures

it's fine

* fix: ensure add/del rxn ends up in the same bucket

src/Discord.Net.Core/RequestOptions.cs

@@ -1,4 +1,4 @@
-using System.Threading;
+using System.Threading;
 
 namespace Discord
 {
@@ -22,6 +22,7 @@ namespace Discord
         internal bool IgnoreState { get; set; }
         internal string BucketId { get; set; }
         internal bool IsClientBucket { get; set; }
+        internal bool IsReactionBucket { get; set; }
 
         internal static RequestOptions CreateOrClone(RequestOptions options)
         {