Add requirements.txt file to install working version of python packages

Just use pip install -r requirements.txt

Add requirements.txt file to install working version of python packages
9a2e9263 · R. Nestler · c7494640 · 9a2e9263
Commit 9a2e9263 authored 5 years ago by R. Nestler
--- a/requirements.txt
+++ b/requirements.txt
+meson~=0.51.1
+crc16~=0.1.1
+pillow~=6.1.0