feat(api): add get local variables method
feat(api): add get local variables method
camunda/camunda-bpm-sdk-js,nagyistoce/camunda-bpm-sdk-js,lightswitch05/camunda-bpm-sdk-js,camunda/camunda-bpm-sdk-js,nagyistoce/camunda-bpm-sdk-js,lightswitch05/camunda-bpm-sdk-js