windows: Prevent command line from opening in release mode (#9839)

Release Notes:

- Prevents the terminal from opening on release mode on Windows

Note: this also prevents Zed from logging to the terminal when it is
launched from the terminal. Is this expected behaviour on other
platforms?

---------

Co-authored-by: 白山風露 <shirayama.kazatsuyu@gmail.com>

crates/lsp/src/lsp.rs

@@ -15,6 +15,10 @@ use smol::{
     io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader},
     process::{self, Child},
 };
+
+#[cfg(target_os = "windows")]
+use smol::process::windows::CommandExt;
+
 use std::{
     ffi::OsString,
     fmt,
@@ -215,15 +219,18 @@ impl LanguageServer {
             &binary.arguments
         );
 
-        let mut server = process::Command::new(&binary.path)
+        let mut command = process::Command::new(&binary.path);
+        command
             .current_dir(working_dir)
             .args(binary.arguments)
             .envs(binary.env.unwrap_or_default())
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
             .stderr(Stdio::piped())
-            .kill_on_drop(true)
-            .spawn()?;
+            .kill_on_drop(true);
+        #[cfg(windows)]
+        command.creation_flags(windows::Win32::System::Threading::CREATE_NO_WINDOW.0);
+        let mut server = command.spawn()?;
 
         let stdin = server.stdin.take().unwrap();
         let stdout = server.stdout.take().unwrap();