add a output type `json` to get output file compatible with transcription file format for the gecko project annotation https://github.com/gong-io/gecko
* methods get_model_by_name, get_model_by_lang, get_model were added into the model class
* importing modules changed to using components; introduced constant MODELS_HOME_DIR; simplified code
* added new model folders into init; changed samples and transcriber bin for new mode loader
* changed back in cli.py lang arg to args.lang
* added 3 directories instead of 1 to check for models
* cli.py: added 3 args instead of 1 for model; __init__.py: changed script get_model_path for run get_model_by_name/lang inside current directory
* deleted default env var
* cli.py: changed arg_name; __init__.py: changed const name, changed model loading only for last directory
* deleted unused method
* changed by_name, by_lang methods, added download_model method
* deleted env variable initialization
* deleted print()
* deteled unused modules
* added progress_bar, added folder AppData/Local/vosk for model search
* changed download_model methond; added my_hook method
Nickolay Shmyrev