create setup.py and support system wide installation

[blshkv]

This is a common problem that many tools which we want to distribute do not support system wide installation. Some of these tools provide their own "install.sh" or "setup.sh" with a distro specific commands (sudo apt-install) to install dependencies instead of a proper setup.py. With a proper setup.py script, an end user can install it using the following single command: python3 setup.py install --user. It also a distro friendly and makes life for maintainers easier.

The end result, a FHS compliant directory structure should be created. In case if software produce any output, a local user directory should be used, such as ~.//

There are some custom cases (installing non-python packages, data files etc) which have been resolved in other packages. Bellow, are reference points on such bug reports with solutions (patches)

https://github.com/pentoo/pentoo-overlay/issues/596