add conversational plugin

Signed-off-by: James <james@jan.ai>

web/utils/conversation.ts

@@ -0,0 +1,3 @@
+export const generateConversationId = () => {
+  return `jan-${(Date.now() / 1000).toFixed(0)}`
+}

web/utils/message.ts

@@ -25,3 +25,7 @@ export function mergeAndRemoveDuplicates(
 
   return result.reverse()
 }
+
+export const generateMessageId = () => {
+  return `m-${Date.now()}`
+}