* Update `--help` Description
Update the output of `--help` so it returns `itch-download` as the program
name, and returns an accurate description of what the program does.
* Make it clear `https://` needs to exist to download a specific game
* Fix `pylint` errors
Add missing docstring to the two CLI tools.
Limit the length of strings.
* Keep consistent style when listing platform types
* Make `--human-folders` a proper on/off flag
The `ArgumentParser.add_argument()` call has been updated to show up as an
'on/off' argument.
* Conform to Code Style Guide
* Add CLI tools to the linting workflow