Add avatars, room topics and message deduplication

types/types.go

@@ -19,8 +19,14 @@ package types
 // WhatsAppID is a WhatsApp JID.
 type WhatsAppID = string
 
+// WhatsAppMessageID is the internal ID of a WhatsApp message.
+type WhatsAppMessageID = string
+
 // MatrixUserID is the ID of a Matrix user.
 type MatrixUserID = string
 
 // MatrixRoomID is the internal room ID of a Matrix room.
 type MatrixRoomID = string
+
+// MatrixEventID is the internal ID of a Matrix event.
+type MatrixEventID = string