feat(dashboard): send room messages from web (#33)

src/db/runtime-memory-messages.ts

@@ -26,6 +26,7 @@ import {
   getNewMessagesBySeqFromDatabase,
   getNewMessagesFromDatabase,
   getRecentChatMessagesFromDatabase,
+  hasMessageInDatabase,
   hasRecentRestartAnnouncementInDatabase,
   storeChatMetadataInDatabase,
   storeMessageInDatabase,
@@ -141,6 +142,10 @@ export function storeMessage(msg: NewMessage): void {
   storeMessageInDatabase(requireDatabase(), msg);
 }
 
+export function hasMessage(chatJid: string, id: string): boolean {
+  return hasMessageInDatabase(requireDatabase(), chatJid, id);
+}
+
 export function getNewMessages(
   jids: string[],
   lastTimestamp: string,