src: rewrite BindingData::GetPackageScopeConfig, don't use url parser

[BalaM314]

Will fix #54304 when completed
Rewrote BindingData::GetPackageScopeConfig to use std::filesystem::path instead of URL parser
TODO:

• modify ToNamespacedPath to accept a std::string as argument
• modify ToNamespacedPath to optionally keep the trailing slash
• call ToNamespacedPath in BindingData::GetPackageScopeConfig
• add tests

[anonrig]

Thank you for doing this. Some small changes are required but in overall, I think this is the correct path forward

[anonrig]

I didn't understand the purpose of this comments. Did you forget them?

Suggested change

	// BufferValue path_buffer(realm->isolate(), current_path_opt.value());
	// // Check if the path has a trailing slash. If so, add it after
	// // ToNamespacedPath() as it will be deleted by ToNamespacedPath()
	// bool endsWithSlash = path_buffer.ToStringView().ends_with(
	// std::filesystem::path::preferred_separator);
	// ToNamespacedPath(realm->env(), &path_buffer);
	// std::string path_value_str = path_buffer.ToString();
	// if (endsWithSlash) {
	// path_value_str.push_back(std::filesystem::path::preferred_separator);
	// }

[BalaM314]

ToNamespacedPath needs to be called here, as current_path_opt is the non-UNC path and won't work if it's longer than 260 characters, but that function requires a BufferValue which requires a v8 value
I was planning to change ToNamespacedPath to accept a string, as it suggests here