Add hardware requirements to tutorial

[ghislainbourgeois]

Description

Add hardware requirements to tutorial. The requirements were estimated from running the tutorial locally. The CPU requirements are for the UPF container built for recent CPUs.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [ ] I have added tests that validate the behaviour of the software
• [ ] I validated that new and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules
• [ ] I have bumped the version of the library