debugger: Add support for remote browser debugging (#39248)

This PR adds support for browser debugging in SSH and WSL projects. We
use the vscode-js-debug-companion extension, repackaged as a standalone
CLI (https://github.com/zed-industries/js-debug-companion-cli).

Closes #38878

Release Notes:

- debugger: Browser debugging is now supported in SSH and WSL projects.

---------

Co-authored-by: Nia <nia@zed.dev>

crates/dap_adapters/src/javascript.rs

@@ -120,6 +120,13 @@ impl JsDebugAdapter {
             configuration
                 .entry("sourceMapRenames")
                 .or_insert(true.into());
+
+            // Set up remote browser debugging
+            if delegate.is_headless() {
+                configuration
+                    .entry("browserLaunchLocation")
+                    .or_insert("ui".into());
+            }
         }
 
         let adapter_path = if let Some(user_installed_path) = user_installed_path {