* Use the __main__.py special filename for main.py
This allows users to run the program directly with `py -m tg` instead of `py -m tg.main`.
* Updated script in pyproject.toml to reflect the previous rename
* Updated readme.md to reflect the previous rename
* Update readme.md with a better description of how to install the software
* Once installed through flit, the tg command can be used directly
* Fix errors in the readme.md introduced in the previous commit
* Run the folder instead of the script
* Change title
* Add isort check to CI
* Add isort configuration to match black
* Fix pyproject syntax error
Co-authored-by: Alex <lightme16@users.noreply.github.com>