non-discord based activity log

[Blumlaut]

Is your feature request related to a problem? Please describe.
somewhat related to both #262 and #387, would be nice if easyadmin would store actions in a local log file, however, one concern would be log size, as i do not want to make it log to infinity, maybe add some log culling after a while?

Describe the solution you'd like
maybe a json or raw text file (i'd probably go towards the first, as we can then parse this without much trouble), that logs actions done by admins, including what exactly they did, their username, ban ids and whatnot

Describe alternatives you've considered
Webhook does exist and does exactly this, but it seems people still sometimes request this feature.

Additional context
N/A

[Blumlaut]

closing in favour of a rewritten #262