[Viewer - Feature request] Load specific sample ids defined by the user

[tdaniel06]

Is your feature request related to a problem? Please describe.
Motivation: two use cases motivating this feature request:

• I have identified validation samples ids with the worst metrics values, I want to visualize them specifically;
• I have identified a list of samples satisfying some conditions on their global scalar features, I would like to see the geometries that led to such results.

Describe the solution you'd like
In addition to "Dataset" and "Split" selection menus, add an optional "Samples ids" field where the user could give a list of the desired samples ids.

Describe alternatives you've considered

Additional context