Add API to Control WordPress Sites

[OmriBarZik]

WHY

We need a way to manage the WordPress site through wp cli

HOW

We need to add the next abilities:

• Manage Users
• Manage Media
• Manage Post
• Manage Plugins
• Manage Theme
• Manage Core

For each there should be the next options

1. List
2. Create
3. Delete
4. Manage Capability