feat: added ChannelMemberResponse to MessageResponse (#1602)

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## Description of the changes, What, Why and How?

## Changelog

-

Author: javierdfm

src/types.ts

@@ -693,6 +693,7 @@ export type MessageResponseBase = MessageBase & {
     language: TranslationLanguages;
   };
   latest_reactions?: ReactionResponse[];
+  member?: ChannelMemberResponse;
   mentioned_users?: UserResponse[];
   message_text_updated_at?: string;
   moderation?: ModerationResponse; // present only with Moderation v2