Add quick "top" filter shortcut buttons to the tab menu.
Inspired by @MilesTeg's https://greasyfork.org/en/scripts/12558.
Note: May not show up with custom subreddit CSS enabled.
The custom top filters (3h,6h,12h) work by fetching+filtering 1 page per 0.75s, you can edit the BUTTONS table to add custom durations.
Will fetch way too many pages if a short filter (3h, 3months, ...) is used on a large sub; older posts have accumulated higher top-score and mostly occupy the first 20+ pages. Recommended on small subs only.
