Record which blocks were performed on ban for each user, revert them on unban

[diox]

Fixes mozilla/addons#16038

Testing

Base scenario:

• Mass ban one a user from the admin
• Check that the add-ons they were the sole author of are disabled and blocked (silently)
• Check that in the user admin, you can see the links to blocklistsubmissions in "content disabled on ban"
• Unban the user from the admin
• Check that blocks on their add-ons made during the bans are reverted

Variations (can be mixed together for even more fun)

• With multiple users at once
• With multiple users at once that are developing add-ons in common
• With user(s) that are authors of add-ons with other users not involved in the ban: those add-ons should not be disabled or blocked
• With a user that is a developer of an add-on we already entirely blocked before: it shouldn't be recorded as blocked as part of the ban, and shouldn't be unblocked on unban
• With a user that is a developer of an add-on that already had versions hard blocked before: those versions shouldn't be recorded as blocked as part of the ban, and shouldn't be unblocked on unban, but any other version should be
• With a user that is a developer of an add-on that already had versions soft blocked before: those versions should be hard-blocked on banned, and go back to soft-blocked on unban, but any other version should be blocked and unblocked as before.