Explain the process of charging Native CSPR Tokens and the role of Session Code

[devendran-m]

User Story:

As a developer working with the Casper Network,
I want a clear and detailed explanation in the documentation on how native CSPR tokens can be charged from one account, including the role of session code in the process,
so that I can implement token transactions accurately and understand the underlying requirements for executing them within an account's context.

Acceptance Criteria:

• The documentation includes a step-by-step guide on charging native CSPR tokens from one account.
• The guide explains the prerequisites, such as account setup, permissions, and requirements for session code.
• The process for using session code within the account’s context to execute token transactions is clearly described.
• Detailed code snippets and examples demonstrate how to implement the process, with annotations explaining the role of session code.
• Visual aids, such as flowcharts or diagrams, illustrate the transaction flow, highlighting where and how session code is used.
• Common issues, best practices, and troubleshooting steps for token charging and session code execution are documented.
• Developers unfamiliar with the process can successfully implement it by following the documentation without needing additional guidance.