Overachiever - achievement tools and tweaks

- "Afterlife Express" (new): Added an option to display a reminder tooltip for riding carriages in Revendreth.
- Suggestions Tab:
-- Added numerous suggestions for Shadowlands zones.
-- Added suggestions for Torghast.
-- Added suggestions for Shadowlands covenants. If outside your covenant sanctum, you can see them by entering "Covenant" as the location. Other covenants' achievements can be seen using "Covenant (Kyrian)", "Covenant (Necrolord)", "Covenant (Night Fae)", or "Covenant (Venthyr)".
-- If the Location field is invalid, no achievements are suggested rather than defaulting to the current location's suggestions.
-- If there are no suggestions, the text indicating this will refer to a "specified location" if the Location field is used.
-- Fixed detection of whether the Cooking window is open.
- Fixed automatically untracking exploration exploration achievements too soon.
- Added an option to track exploration achievements when incomplete on the current character but completed by a different one.
- Fixed possible failure to automatically untrack timed battleground achievements.
- Fixed certain manually untracked achievements getting automatically retracked later when they shouldn't be.