Update project / maintenance

[nbdy]

• Replaced setup.py with pyproject.toml
• Updated requirements.txt (opencv was not used)
• Renamed module from RealESRGAN (collides with original pypi project) to py-real-esrgan
• Moved main.py to real_esrgan/main.py and added arguments (scale, model path, input path, output path)
• Updated README.md
• Reformatted code / optimized imports

[jag-k]

Are we really need to rename a project?

[jag-k]

Why we need it?

I think you forgot to delete :)

Suggested change

"opencv-python",

[nbdy]

You are right, it is not imported anywhere. I missed that.

[jag-k]

And I think we can delete this file entirely 'cause we already use pyproject.toml for it

Suggested change

	numpy
	opencv-python
	Pillow
	torch>=1.7
	torchvision>=0.8.0

[nbdy]

The reason I kept this file is that PyCharm prompts the user if there are any missing dependencies.
It was more a convenience for me. Generally we can remove it, yes.

[nbdy]

If you don't intent to publish it to pypi or if you don't want anyone to publish their work using this library on pypi there is no need to rename the project.
pypi.org does not allow a direct link as a dependency.