Pipeline configuration: introduce `metadata_entity` parameter type

[SilinPavel]

It would be useful to have a preset parameter type, that allows user to select a value from some predefined list, that will be populated to the multiple configuration parameters.

Let's introduce metadata_entity parameter type:

"<parameter-name>": {
        "type": "metatada_entity",
        "value": "<external_id>",
        "multiple" : true,
        "metadataConfig": {
            "folderId": "11624 (optional)",
            "metadataClass": "genomes",
            "nameField": "Name",
            "params": {
                "PARAM_FASTA": "FASTA",
                "PARAM_GTF": "GTF",
                "PARAM_GTF2": "ADDITIONAL_GTF",
                "PARAM_ASDASDADSASD": "EXTRA"
            }
        }
      }

• A list of metadata entities of metadataConfig.metadataClass of the metadataConfig.folderId metadata should be displayed for that parameter
• If user selects a metadata entity, a list of parameters metadataConfig.params should be created with corresponding entities fields values.