Implement cli

[argysamo]

Implement the feature, which does not require the GUI to start in order to transform a dataset.
It will be something like: tedam --input input_file.txt --template optional_input_template.tmpl --metadata optional_metadata_file.yaml --output optional_output_file.txt --output-template output-template.tmpl

• **t**edam means we are using the transformation command,
• original edam arguments (i.e. input, template, metadata) should be defined. In case input file has already been imported, only input argument is required,
• export arguments:
  • output: optional, the name/path of the exported file,
  • output-template: the template name according to which input file will be transformed