Postgresql migration

[mrjvs]

• [x] Create initial schema
• [x] implement schemas as models - 27th October 2021
  • [x] guilds
  • [x] guild_settings_management
  • [x] guild_settings_moderation
  • [x] guild_settings_core
  • [x] guild_modules
  • [x] guild_autoroles
  • [x] guild_greetings
  • [x] guild_tags
  • [x] guild_modlog_events
  • [x] guild_modlog_events_enabled
  • [x] guild_todolist
  • [x] guild_todolist_items
  • [x] guild_filters
  • [x] guild_filters_criteria
  • [x] guild_perms_groups
  • [x] guild_perms_users
  • [x] guild_perms_user_membership
• [x] implement hibernate - 27th October 2021
• [ ] Migrate bot code
• [ ] migrate current database