Merging consumer & prosumer flow : Code changes & Install Unified plugin in the new strapi

## Description
Make the necessary code changes to support the merging of consumer and prosumer flows and install the unified plugin in the newly initialized Strapi instance. This task includes modifying the backend to handle unified workflows and integrating the plugin to manage both consumer and prosumer operations seamlessly.

## Goals
- [x] Implement code changes to support unified consumer and prosumer flows.
- [x] Install and configure the unified plugin in the new Strapi instance.
- [x] Ensure that the unified plugin integrates seamlessly with the existing Strapi configuration.
- [x] Conduct testing to validate that the plugin and code changes work as intended.

## Expected Outcome
A fully operational Strapi instance with the unified plugin installed and configured, enabling seamless handling of merged consumer and prosumer workflows.

## Acceptance Criteria
- [x] Necessary code changes for unified consumer and prosumer workflows are implemented.
- [x] The unified plugin is successfully installed and configured in the new Strapi instance.
- [x] Testing confirms that the plugin and code changes function as expected, supporting both consumer and prosumer operations.
- [x] Documentation is updated to reflect the changes and installation process.

## Mockups / Wireframes
NA

## Product Name
Beckn

## Domain
TBD

## Tech Skills Needed
- Strapi Development
- Plugin Installation and Configuration
- Backend Development
- Testing and Validation

## Complexity
High

## Category
Backend Development

## Sub Category
Plugin Installation and Code Changes