Feature/virtual robot writer

ToDo:

• add example

requested review from @RainerKartmann

assigned to @fabian.reister

added 3 commits

• fc3f568a - VirtualRobotWriter: fix
• bbe49104 - new component: VirtualRobotWriterExample
• 4005ff07 - new scenario: VirtualRobotWriterExample

Compare with previous version

marked the checklist item add example as completed

marked this merge request as ready

added 4 commits

• f47f2f5e - removing hard coded value
• 3fc18e9f - transform helper: more flexible version to obtain tf chain
• b931229d - fixed root "node"
• 5cb14f6e - example: minor fix

Compare with previous version

mentioned in commit ab8e177b

merged

mentioned in issue #105 (closed)