debugger: Fix issues with debugging scripts from package.json (#32995)

- [x] Pass in cwd
- [x] Use the appropriate package manager
- [x] Don't mix up package.json and composer.json

Release Notes:

- debugger: Fixed wrong arguments being passed to the DAP when debugging
scripts from package.json.

crates/languages/src/lib.rs

@@ -18,6 +18,7 @@ mod c;
 mod css;
 mod go;
 mod json;
+mod package_json;
 mod python;
 mod rust;
 mod tailwind;
@@ -25,6 +26,8 @@ mod typescript;
 mod vtsls;
 mod yaml;
 
+pub(crate) use package_json::{PackageJson, PackageJsonData};
+
 #[derive(RustEmbed)]
 #[folder = "src/"]
 #[exclude = "*.rs"]