feature: Make bidirectional formatting optional (#2204)

* Init

* Clearing up comment on config entry.

* Update user entities to remove storage of the setting

Co-authored-by: Quin Lynch <lynchquin@gmail.com>

src/Discord.Net.Core/DiscordConfig.cs

@@ -187,5 +187,15 @@ namespace Discord
         ///     <b>This will still require a stable clock on your system.</b>
         /// </remarks>
         public bool UseInteractionSnowflakeDate { get; set; } = true;
+
+        /// <summary>
+        ///     Gets or sets if the Rest/Socket user <see cref="object.ToString"/> override formats the string in respect to bidirectional unicode.
+        /// </summary>
+        /// <remarks>
+        ///     By default, the returned value will be "?Discord?#1234", to work with bidirectional usernames.
+        ///     <br/>
+        ///     If set to <see langword="false"/>, this value will be "Discord#1234".
+        /// </remarks>
+        public bool FormatUsersInBidirectionalUnicode { get; set; } = true;
     }
 }