Implementation Guides for Open Belem v0.2

Reference Ticket for Open Belem
https://github.com/beckn/missions/issues/98

## Description
Complete the **implementation guide** for the **Open Belem** project. This guide will provide detailed instructions and documentation on how to implement the project, including information about architecture, APIs, flow diagrams, and configuration details.

## Goals
- [x] Finalize the **Open Belem** implementation guide, covering all required sections such as architecture, APIs, flow diagrams, configuration, and user instructions.
- [x] Ensure the guide follows a consistent structure, including best practices and specific instructions for the relevant platform.
- [x] Review and validate the content to ensure it is accurate, up-to-date, and ready for implementation teams.
- [x] Publish the guide to the appropriate repository or platform, making it easily accessible to the teams involved.

## Expected Outcome
- A fully completed and detailed implementation guide for the **Open Belem** project, ready for use by developers.
- The guide provides clear instructions and documentation for implementing the project, including API details, architecture diagrams, and configuration files.
- The guide is reviewed and validated to ensure its accuracy and relevance.

## Acceptance Criteria
- [x] The **Open Belem** implementation guide is completed with all necessary sections, including architecture, APIs, flow diagrams, and configuration details.
- [x] The guide is reviewed, validated, and published to the relevant repository or platform.
- [x] The guide is accessible to the teams involved in the implementation of Open Belem.

## Mockups / Wireframes
NA

## Product Name
Open Belem

## Domain
Project Documentation / Implementation Guide

## Tech Skills Needed
- Documentation Writing
- API Documentation
- Technical Writing
- Knowledge of Project Architecture and Configuration

## Complexity
High

## Category
Documentation

## Sub Category
Implementation Guide

## Project View
Open Belem

## Project Name
Open Belem Implementation Guide