* Auto generate mapping files with command `java -jar grasscutter.jar -gachamap`
* Static file provider
* For gacha record webpage
* All static files should be stored at `GRASSCUTTER_RESOURCE/gcstatic/`
* Can benefit other subsystem in future when webpages involved
* [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