Ability to change planning of scheduled tasks

[JaredVanderford]

Is your feature request related to a problem? Please describe.
The default timing for update seems fine, but once a day for searching feels too little IMO. The ability to schedule the task frequency or at least when they run would make it easier for those who have a workflow around the comics (like scanning for tags, importing into tools like komga, etc.)

Describe the solution you'd like
Ideally the ability to provide a complex schedule via something like a cron pattern, but even a basic ability to change the frequency and/or time of the tasks running via simple dropdown would be preferred to the current solution. The cron pattern would allow for more frequent updates on Tues and Weds (when the bulk of the weekly book scans come in) so that people have quicker access to the new books of the week.