Split messages on double line breaks (\n\n) and implement typing delay in WhatsApp

This change modifies the Evolution Bot integration to:

- Split messages on double newline characters (\n\n) and send each part as a separate message in WhatsApp.
- Add a typing delay before sending messages to simulate a more natural, human-like typing experience.

These updates enhance user interaction by breaking long messages into manageable parts and making bot responses feel more conversational.

src/api/integrations/chatbot/evolutionBot/services/evolutionBot.service.ts

@@ -190,14 +190,44 @@ export class EvolutionBotService {
     }
 
     if (textBuffer.trim()) {
+
+      const multipleMessages = textBuffer.trim().split("\n\n");
+
+      if (multipleMessages) {
+        for (let index = 0; index < multipleMessages.length; index++) {
+          const message = multipleMessages[index];
+
+          const delayPerChar = 200 
+          const minDelay = 1000
+          const maxDelay = 20000
+          const delay = Math.min(Math.max(message.length * delayPerChar, minDelay), maxDelay);
+
+
+
+          if (instance.integration === Integration.WHATSAPP_BAILEYS) {
+            await instance.client.presenceSubscribe(remoteJid);
+            await instance.client.sendPresenceUpdate('composing', remoteJid);
+          }
+          
+          await new Promise<void>((resolve) => {
+            setTimeout(async () => {
               await instance.textMessage(
                 {
                   number: remoteJid.split('@')[0],
                   delay: settings?.delayMessage || 1000, 
-          text: textBuffer.trim(),
+                  text: message,
                 },
-        false,
+                false
               );
+              resolve();
+            }, delay);
+          });
+
+          if (instance.integration === Integration.WHATSAPP_BAILEYS) {
+            await instance.client.sendPresenceUpdate('paused', remoteJid);
+          }
+        }
+      }
     }
 
     sendTelemetry('/message/sendText');