improve build and README

- clean pip
- do not use sudo anymore
- add missing mypy-protobuf package
- sort package dependencies
- fix order of build calls
- add frame color docu to README

requirements.txt

@@ -1,9 +1,9 @@
-protobuf
-qrcode
-Pillow
-qreader
-opencv-contrib-python<=4.7.0; sys_platform == 'darwin'
-opencv-contrib-python; sys_platform != 'darwin'
-pyzbar
-typing_extensions; python_version<='3.7'
 colorama>=0.4.6
+opencv-contrib-python; sys_platform != 'darwin'
+opencv-contrib-python<=4.7.0; sys_platform == 'darwin'
+Pillow
+protobuf
+pyzbar
+qrcode
+qreader
+typing_extensions; python_version<='3.7'