feat(API services): add create comments for task
feat(API services): add create comments for task

add method which creates new comments for a task

related to CAM-2770

nagyistoce/camunda-bpm-sdk-js,nagyistoce/camunda-bpm-sdk-js,lightswitch05/camunda-bpm-sdk-js,camunda/camunda-bpm-sdk-js,camunda/camunda-bpm-sdk-js,lightswitch05/camunda-bpm-sdk-js