Implement archival operation against mock

[phwissmann]

Goal of this story is to implement operations on the dataset and the interaction with the LTS.

Tasks to implement:

• Create datablocks
• Cleanup/restore datablocks (failure case)
• Move datablocks to staging
• Cleanup staging (failure case)
• Move datablocks to LTS
• Validate datablocks

LTS Constraints:

• file size
• path length
• delay action timer

Definition of done:
Service is deployed an archiving pipeline for an existing dataset can be triggered and the dataset is archived against a mock implementation of the LTS