feat(server): Add stub for server start command

src/server.rs

@@ -1,5 +1,7 @@
 use std::io::Write;
 
+use tracing::info;
+
 pub(crate) fn init() {
     let file_name = "git-next-server.toml";
     let path = std::path::Path::new(file_name);
@@ -20,3 +22,29 @@ pub(crate) fn init() {
         }
     }
 }
+
+pub(crate) fn start() {
+    let Ok(_) = init_logging() else {
+        eprintln!("Failed to initialize logging.");
+        return;
+    };
+    info!("Starting Server...");
+    // todo!()
+}
+
+pub fn init_logging() -> Result<(), tracing::subscriber::SetGlobalDefaultError> {
+    use tracing_subscriber::prelude::*;
+
+    let console_layer = console_subscriber::ConsoleLayer::builder().spawn();
+
+    let subscriber = tracing_subscriber::fmt::layer()
+        // NOTE: set RUSTLOG in ${root}/.cargo/config
+        .with_target(false)
+        .with_file(true)
+        .with_line_number(true);
+    tracing_subscriber::registry()
+        .with(console_layer)
+        .with(subscriber)
+        .init();
+    Ok(())
+}