Option to periodically clear the public.activity_log_event database table

[F1L337]

Is your feature request related to a problem? Please describe.
The database could grow very large over time if there is no retention for the tables.

Describe the solution you'd like
An option to periodically clear the entries based on timestamps (e.g., "Delete all logs older than x days").

Describe alternatives you've considered
Create my own script to be triggered by cron to handle this task.

Additional context
Low priority, but it would be nice to have this feature implemented directly in Defguard.

Result:

• Have entries in the activity log table in the dev environment older than a week.
• Set the cleanup frequency to 7d
• Show that entries older than 7d were removed.

[teon]

@F1L337 that's a good idea! Adding to backlog for 1.6, thanks! 🫡

[teon]

@Va1ter assiging for design

[teon]

@Va1ter this is a "General" setting

[Va1ter]

@teon @kchudy i assume we should have same approach we defined for other element - user activates feature and selects one of the predefined ranges. (maybe we can expand the list)