Create a command for creating language resource duplicates

For every TM, that is assigned to a task, and that is not a task-TM

• create an empty duplicate with the same name and the suffix _duplicate
• assign it to the same tasks, the original TM is assigned to
• make sure, you create for each TM only one _duplicate

Also need to app an option to t5memory:reimport command to process only tasks that are finished in workflow