Windows and WSL

[llogick]

See https://github.com/zigtools/zls-vscode/issues/56 and https://github.com/zigtools/zls/issues/1137

Vague idea: Add a ${arch}-${os} subfolder here const installDir = vscode.Uri.joinPath(context.globalStorageUri, "zls_install"); Treat zls.path as an override - if set user is responsible for managing the executable (could still ask to install if it fails to start or if older then set to null -> use InstallDir) Starting client: check zls.path == null (and =="") -> use InstallDir