Update DMP versioning logic

[briri]

Remove the versioning logic from the dmp_updater.rb in the Lambda layer and into its own dmp_versioner.rb.

This new file should have 2 methods.

• new_version(dmp:) - Input should be the JSON of the latest version of the DMP:
  • Clone the latest version.
  • Update the clone's SK and add a {"descriptor": "is_previous_version_of", "work_type": "output_management_plan", "type": "doi", "identifier": "https://doi.org/10.12345/ABC123"} to the dmproadmap_related_identifiers
  • Save the new Clone to Dynamo
• versions(PK:) - Input should be the DMP ID as a PK string (e.g. DMP#doi.org/10.12345/ABC123)
  • Query the index to fetch the version Sis
  • Return the versions as and array of dates (sorted Desc) and URLs (e.g. [{"timestamp":"2022-10-05T11:12:13+00:00", "url": "https://my.domain.edu/api/v0/dmps/10.12345/ABC123?version=2022-10-05T11:35:21+00:00"}])

Modify the getDmp Lambda function to call versions and append the results to a dmphub_versions section of the root of the DMP JSON.

  "dmphub_versions": [
      { 
        "timestamp": "2022-01-28T17:52:14+00:00", 
        "url": "https://example.com/api/v0/dmps/10.12345/ABCDEFG?version=2022-01-28T17:52:14+00:00"
      },
      { 
        "timestamp": "2022-11-13T08:33:10+00:00", 
        "url": "https://example.com/api/v0/dmps/10.12345/ABCDEFG?version=2022-11-13T08:33:10+00:00"
      },
      { 
        "timestamp": "2021-11-08T19:06:04+00:00", 
        "url": "https://example.com/api/v0/dmps/10.12345/ABCDEFG?version=2021-11-08T19:06:04+00:00"
      }
    ]