feat: templated external links (draft)

[GBirkel]

Description

Add a field for generating dataset links based on admin-configured templates.

See #689 for details.

This has a companion PR for the front end: SciCatProject/frontend#1910 .

Motivation

We get a lot of requests from users and researchers to provide a variety of different types of web-based tools that related directly to datasets. These can be pages that display visualization, pages that provide analysis tools (including AI/ML) and jupyter notebooks on particular JupyterHub instance. In all cases, we would want to take the user to the page with the dataset in context.

Fixes

• Bug fixed (#X)

Changes:

• changes made

Tests included

• Included for each change/fix?
• Passing?

Documentation

• swagger documentation updated (required for API changes)
• official documentation updated

official documentation info

[nitrosx]

IT can be approved after fixing the linting and adding some API testing.
Also I would check if dataset schema to obsolete dto works correctly

[GBirkel]

Also I would check if dataset schema to obsolete dto works correctly

It does, though I had to add toObject: { virtuals: true, }
https://github.com/SciCatProject/scicat-backend-next/pull/2097/files#diff-4b9a5b8e6eef69831951cba2b15a48dd5fd9b05d06b5fe10d223171039448199R18

Looks like the current-to-obsolete conversion is the only code that uses toObject on datasets.