feat: workerize external generation

server-rs/crates/spacetime-module/src/lib.rs

@@ -30,6 +30,7 @@ mod big_fish;
 mod custom_world;
 mod domain_types;
 mod entry;
+mod external_generation;
 mod gameplay;
 mod jump_hop;
 mod match3d;
@@ -49,6 +50,7 @@ pub use big_fish::*;
 pub use custom_world::*;
 pub use domain_types::*;
 pub use entry::*;
+pub use external_generation::*;
 pub use gameplay::*;
 pub use jump_hop::*;
 pub use match3d::*;