Moved commands.py into commands/__init__.py for easier refactoring.
Moved `version` command into its own file.
Moved `help` command into its own file.
Moved `stats` command into its own file.
Moved `list` command into its own file.
Moved `config` command into its own file.
Moved `completion` command into its own file.
Moved utility functions into own file.
Moved `move` command into its own file.
Moved `fields` command into its own file.
Moved `update` command into its own file.
Moved `remove` command into its own file.
Moved `modify` command into its own file.
Moved `write` command into its own file.
Moved `import` command into its own folder, more commit following.
Moved ImportSession related functions into `importer/session.py`.
Moved import display display related functions into `importer/display.py`
Renamed import to import_ as a module cant be named import.
Fixed imports in init file.
