feat: Add DefaultReaction type to message types

src/types/message.ts

@@ -34,6 +34,11 @@ export type Component = Partial<Button | SelectMenu> & {
 //     components?: Component[];
 // }
 
+export type DefaultReaction = {
+    emoji_id?: string | null;   // the id of a guild's custom emoji
+    emoji_name?: string | null; // the unicode character of the emoji
+};
+
 export type Emoji = {
     name: string | null;
     id: string | null;
@@ -274,4 +279,4 @@ export type DiscordMessage = {
         preview_asset?: string;
         format_type: number;
     }[];
-}
+}