UnravelDocs v4.2.1

• Merge pull request #142 from Brints/payments-stripe
• fix: upload and extract documents.
• fix: upload and extract documents.
• fix: upload and extract documents.
• Fix: security workflow.
• Fix: security workflow.
• chore: Refactored events to adhere to single responsibility principle.
• Fix: Refactored AuthThymleafTemplate & UserThymleafTemplate to generate urls.
• Completely refactored email service to use pub/sub using RabbitMq.
• chore: Refactored message queuing to use event driven architecture.
• feat: Implemented stripe payment service.
• chore: Add stripe dependency to pom.xml