refactor: server: collapse tests to base of crate

crates/server/src/config/mod.rs

@@ -1,2 +0,0 @@
-#[cfg(test)]
-mod tests;

crates/server/src/lib.rs

@@ -7,8 +7,6 @@ use kxio::{fs::FileSystem, network::Network};
 use std::path::PathBuf;
 use tracing::{error, info, level_filters::LevelFilter};
 
-mod config;
-
 pub fn init(fs: FileSystem) {
     let file_name = "git-next-server.toml";
     let pathbuf = PathBuf::from(file_name);