[FEATURE] Adjustable length of "Extreme Items" list

[poshpotato]

Is your feature request related to a problem? Please describe.
I would like the ability to adjust the number of items listed at end of day: I'd like to see more than the top and bottom three items, purely out of curiosity.

Describe the solution you'd like
I am not super familiar with the codebase, but it seems adding a preference and using the value of that preference instead of 3 in packages/garbo/src/session.ts lines 202 and 203 (at the time of writing) would make this possible.

Describe alternatives and complications
I do not have any alternatives. Complications may arise in the addition of the preference.

Additional context
N/A