- Create a new partitioned table web_hook_logs_part_0c5294f417
  with a nearly identical schema as web_hook_logs
- Create all the monthly partitions that cover
  existing web_hook_logs data
- Install trigger that keeps tables in sync
- Add WebHookLogPartitioned model and register it for
  dynamic partition creation
- Schedule background migration jobs to copy data from web_hook_logs
  to the partitioned table
- Add explicit primary key definition to WebHookLog
  This will facilitate the smooth transition when we swap the tables