Documentation on difference between Desktop and Server editions

[lebensterben]

Description

This is inspired by a user's feedback on community website. (link)

It's helpful to basic users if we document the difference between Clear Linux Desktop and Clear Linux Server, in terms of the following:

• The differences in live ISOs, their sizes and their respective installers (GUI
  vs TUI).
• The differences in default bundles, and optionally the (approximate) disk space
  usages if only installing default bundles.

I think the new document should be a guide, and we should add a link in Get started page.

Further notes

I haven't tried with any container images.
We should also describe them if it's necessary, or if any of them has non-trivial differences from Desktop/Server editions.

[mvincerx]

Please add an extra bullet or two explaining appropriate use cases re iso images -desktop and -server:
https://docs.01.org/clearlinux/latest/get-started/index.html

[puneetse]

This topic came up on the forums again: https://community.clearlinux.org/t/what-is-th-difference-between-desktop-and-server-image/4932/2?u=puneetse .