Maillog log table size escalation

We have the same issue on Drupal 9, and soon Drupal 10, so we will try to apply and reroll the patch to fit it into the last version.

In our case, after reviewing the rows, the problem is the field body, which is saved as long text without limit, we saw that the files are saved as base64 which makes the table very heavy.

Added tests, ready to review.
And new config.

• Can choose if the body is trimmed (512 chars)
• Option to remove base64 from body
• Limit the elements to keep by days
• Limit the elements to keep by number

I've committed the MR, very nice work, thank you!

I also committed the D7 version, with minor changes. Thank you.

Automatically closed - issue fixed for 2 weeks with no activity.