Metadata for models

[rngadam]

• name of the model
• version of the model
• source of data
• usage

as a json file metadata associated to the model

model should be checked in (which format)?

[MaxenceGui]

Similar to this idea is the

• Create the pipeline insertion module nachet-backend#60
  that introduce a YAML template for data scientist to enter all the metadata related to the pipeline and models.

[MaxenceGui]

@Francois-Werbrouck Do you think we can consider this issue done?