* [BREAK] proto auto compiled by gradle
* [BREAK] move proto to submodule
* update gitmodules
* [BREAK] move proto to submodule
* move proto to submodule
* fix merge conflict
* fix github action after merging
* fix merge conflicts and del submodule
* upload the proto
1. During the conversion of Morphia calls to the new API, some of the `Filter.eq()` calls had their `field` set to `playerId` due to a copy/paste typo.
2. Morphia 2 switches to the codec system, so anything that will be serialized in the pipeline requires the `@Entity` annotation.