FEATURE: Overhaul of admin API key system (#8284)

- Allow revoking keys without deleting them
- Auto-revoke keys after a period of no use (default 6 months)
- Allow multiple keys per user
- Allow attaching a description to each key, for easier auditing
- Log changes to keys in the staff action log
- Move all key management to one place, and improve the UI

app/jobs/scheduled/clean_up_unused_api_keys.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module Jobs
+
+  class CleanUpUnusedApiKeys < ::Jobs::Scheduled
+    every 1.day
+
+    def execute(args)
+      ApiKey.revoke_unused_keys!
+    end
+
+  end
+
+end