Check for wrong task CLI arguments.

[sergey-serebryakov]

When users provide unrecognized task parameters on a command line (e.g., typo), MLCube configuration parser will report it and will raise a configuration error.
For instance, if task configuration section is:

tasks:
  download:
    parameters:
      inputs: {data_config: data.yaml}
      outputs: {data_dir: data/, log_dir: logs/}
  train:
    parameters:
      inputs: {data_dir: data/, train_config: train.yaml}
      outputs: {log_dir: logs/, model_dir: model/}

the following will raise a configuration error:

mlcube run --mlcube=. --task=download --platform=docker data_folder=/datasets/mnist

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