For example 5 levels per guild. - [x] [Developer](https://github.com/nation3/citizen-rewards/tree/main/development-guild#developer-skill-level-expectations) @aahna-ashina - [x] [Operator](https://github.com/nation3/citizen-rewards/pull/11) @aahna-ashina - [x] #16
