Add a page for unsupported operating systems

[height[bot]]

This pull request has been linked to 1 task:

• T-9379 install dz-cli command may be buggy (unlink task)

💡Tip: Add "Close T-9379" to the pull request title or description, to a commit message, or in a comment to mark this task as "Done" when the pull request is merged.

[cmiller01]

Link T-9379