Add e-Paper lib, add basic test file

src/__init__.py

src/lib/__init__.py

src/lib/lib/__init__.py

src/lib/lib/waveshare_epd/__init__.py

src/lib/lib/waveshare_epd/epd1in54.py

src/lib/lib/waveshare_epd/epd1in54_V2.py

src/lib/lib/waveshare_epd/epd1in54b.py

src/lib/lib/waveshare_epd/epd1in54c.py

src/lib/lib/waveshare_epd/epd2in13.py

src/lib/lib/waveshare_epd/epd2in13_V2.py

src/lib/lib/waveshare_epd/epd2in13bc.py

src/lib/lib/waveshare_epd/epd2in13d.py

src/lib/lib/waveshare_epd/epd2in7.py

src/lib/lib/waveshare_epd/epd2in7b.py

src/lib/lib/waveshare_epd/epd2in9.py

src/lib/lib/waveshare_epd/epd2in9bc.py

src/lib/lib/waveshare_epd/epd2in9d.py

src/lib/lib/waveshare_epd/epd4in2.py

src/lib/lib/waveshare_epd/epd4in2bc.py

src/lib/lib/waveshare_epd/epd5in83.py