docs: Update reports page

[christopher-hakkaart]

• Styles reports page as high-level explanation and examples
• Update screenshots (now showing new logo)
• Move reference definition lists to the reference section/page

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[bentsherman]

Thanks Chris. I moved some things around, everything looks much better with your refresh.

Some food for thought: we could put a note at the top of the Reports page to the effect of "these reports can only be used to analyze runs after they have completed, use a service like Seqera Platform for real-time monitoring"

[christopher-hakkaart]

Thanks Ben - I've made a ticket about adding a note at the top of the page so it's not lost in the PR. I'll need to think about balanced language.