Garbage collection for certain database tables

[alexweissman]

We should implement some kind of automatic garbage collection for the throttles, password_resets, and verifications tables. This could be similar to the way session gc works, so that records are checked for removal whenever the table is next written to.

In some applications, it might be desirable to run garbage collection on the activities table as well. Obviously, this should all be configurable.

[lcharette]

Note to self : https://laravel.com/docs/10.x/eloquent#pruning-models