Add statistics page

[geekygirlsarah]

What GitHub issue does this PR apply to?

Closes #495

What changed and why?

Added a statistics page that tells interesting stats about what people are looking up

AI bots used in the process of making this PR

Jetbrains Junie

The site logs page visits, but also what languages have been looked up and compared with each other. They are stored in the LookupData and SiteVisit models.
I would like a statistics page that shows interesting metrics of things like most popular languages looked up, most popular concepts compared, or other things like those. Add some interesting tables or graphs to reflect these.

(If editing website code) Please add screenshots

Checklist

• I claimed any associated issue(s) and they are not someone else's
• I have looked at documentation to ensure I made any revisions correctly
• I tested my changes locally to ensure they work
• For language files, I have validated the edited files are valid JSON and data shows up correctly
• For website code edits, I have added or edited any appropriate unit tests for my changes
• If I used artificial intelligence (AI), I have reviewed the suggested changes and ensured they work correctly

Any additional comments or things to be aware of while reviewing?