chore: Add webhookUrl to Message model, DTOs, and services

Adds webhookUrl field to Message model, SendMessageDto, SendTemplateDto, SendContactDto, and related services to enable sending messages to a specified webhook URL. This change allows for more flexible message handling and delivery options.

Modified files:
- prisma/postgresql-schema.prisma
- src/api/dto/sendMessage.dto.ts
- src/api/services/channels/whatsapp.business.service.ts
- src/validate/message.schema.ts

Untracked files:
- prisma/migrations/20240723200254_add_webhookurl_on_message/

src/api/dto/sendMessage.dto.ts

@@ -13,6 +13,7 @@ export class Options {
   encoding?: boolean;
   mentionsEveryOne?: boolean;
   mentioned?: string[];
+  webhookUrl?: string;
 }
 
 export class MediaMessage {
@@ -137,6 +138,7 @@ export class SendTemplateDto extends Metadata {
   name: string;
   language: string;
   components: any;
+  webhookUrl?: string;
 }
 export class SendContactDto extends Metadata {
   contact: ContactMessage[];