Add p8 in ctypto x

[TinaKT]

Purpose

To add info about P8 related functionality in CryptoX and update outdated workflows.

Changes

Workflows and screen shots have been updated/added in the following pages:

• Add a validator
• Change validator options
• Stop a validator
• Suspend/Unsuspend a validator
• Delegate to a staking pool or passive delegation
• Remove delegation to a staking pool or passive delegation
• Update delegation to a staking pool or passive delegation

Checklist

• My code follows the style of this project.
• The code compiles without warnings.
• I have performed a self-review of the changes.
• I have documented my code, in particular the intent of the
  hard-to-understand areas.

By submitting the contribution I accept the terms and conditions of the
Contributor License Agreement v1.0

• link: https://developers.concordium.com/CLAs/Contributor-License-Agreement-v1.0.pdf