setupnotes.md: Divide notes into separate server and client sections

Signed-off-by: Andrew Turner <andrewjamesturner0@gmail.com>
setupnotes.md: Add section on client VM setup

Signed-off-by: Andrew Turner <andrewjamesturner0@gmail.com>
setupnotes.md: Make instructions for installing R consistent between server and client sections

Signed-off-by: Andrew Turner <andrewjamesturner0@gmail.com>