[Documentation] Documentation for Arcitecture and workflow.

[Satendra-SR]

Is your feature request related to a problem? Please describe. Documentation of the rapidpro-api-client system.

Describe the solution you'd like

• [ ] Need for this Service
• [ ] Architecture
• [ ] Directory Structure
• [ ] Functions definition
• [ ] PRD link
• [ ] GitHub Repo Link

Describe alternatives you've considered NA

Additional context NA

Documentation Add whatever documentation will be required here.

[Satendra-SR]

This had been deprioritized for now, and using bulk upload for marking users as churn in RapidPro