document how to boot zos node with gpu

[Nabil-Salah]

Is your feature request related to a problem? Please describe

There is currently no documentation that clearly explains how to boot with GPU support for development in ZOS.

Describe the solution you'd like

Add clear and detailed documentation on how to boot ZOS with GPU support for development purposes.

[Nabil-Salah]

• Updated the readme for zos to deploy with GPU
• Updated readme broken links
• Added a script to unbind the GPU to passthrough
• Added a script to reverse the GPU passthrough script