message: add a log message when os is unsupported.
diff: @@ -40,6 +40,8 @@ export class LaTexFormatter {
  this.currentOs = linux
  } else if (this.machineOs === mac.name) {
  this.currentOs = mac
  + } else {
  + this.extension.logger.addLogMessage('LaTexFormatter: Unsupported OS')
  }
  const configuration = vscode.workspace.getConfiguration('latex-workshop')
  this.formatter = configuration.get<string>('latexindent.path') || 'latexindent'
  