Parse env vars and args from debug launch editor (#30538)

Release Notes:

- debugger: allow setting env vars and arguments on the launch command.

---------

Co-authored-by: Cole Miller <m@cole-miller.net>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

crates/dap_adapters/src/go.rs

@@ -19,7 +19,8 @@ impl GoDebugAdapter {
             dap::DebugRequest::Launch(launch_config) => json!({
                 "program": launch_config.program,
                 "cwd": launch_config.cwd,
-                "args": launch_config.args
+                "args": launch_config.args,
+                "env": launch_config.env_json()
             }),
         };