Script to update a workspace object in the CosmosDB with the list of template versions that are available

[TonyWildish-BH]

This depends on #188.

Once the template version information data structure exists, we need a mechanism for the TRE Admin to be able to write that information into a workspace document in the CosmosDB.

This can be a standalone Python/Bash script that calls an Azure/Cosmos CLI tool or REST API to operate directly on the CosmosDB, in the first case.

Acceptance criteria:

• a script that takes a workspace Resource ID, the name of a JSON file, and contact information for the CosmosDB in some form (e.g. config file or Azure resource ID)
• the script then locates the document for the workspace with that ID and updates it with the contents of the JSON file
• any previous instance of the JSON structure in the workspace document should be overwritten.