src/server.rs: improve crate layout

src/lib.rs

@@ -8,16 +8,7 @@ pub mod tools;
 pub mod api_schema;
 
 #[macro_use]
-pub mod server {
-
-    pub mod environment;
-    mod worker_task;
-    pub use worker_task::*;
-    pub mod formatter;
-    #[macro_use]
-    pub mod rest;
-
-}
+pub mod server;
 
 pub mod pxar;