[Feature] Server-side Workflows

## Summary
Appsmith has been instrumental in building user-friendly UIs for various backend processes. However, there's an emerging need within our community for advanced server-side automation capabilities. This feature request aims to address this gap by introducing a new feature called 'Workflows' in Appsmith.

'Workflows' would revolutionize how we handle automation in Appsmith by enabling long-running, server-side automation for internal tools. This feature would be particularly beneficial in automating tasks that require both automated steps and human intervention, such as approvals or reviews.

## Key Characteristics of 'Workflows':

- **Human in the Loop Functionality**: Integrates human decisions into automated processes, balancing automation with essential human oversight.
- **Orchestrate with Code, Organise with Node**: Appsmith Workflows blend the best of both worlds: they simplify action configurations like node-based systems while enabling complex logic orchestration with the flexibility of code-based workflows. This efficient hybrid approach streamlines workflow management effectively.
- **Efficient Task Automation**: Streamlines complex processes, reducing manual effort and increasing efficiency.

## Potential Use Cases:

- **Order Refund Workflow**: Automate high-value order refunds requiring multiple approvals, adding an extra layer of scrutiny to sensitive transactions.
- **Loan Sanction Workflow**: Simplify the loan sanctioning process by integrating automated steps with approvals from various teams, enhancing efficiency and coordination.

This will include #738