capture QR codes from camera and major refactoring

- add GUI for QR code capturing from camera (CV2 is used)
- support different QR readers: ZBAR,QREADER,QREADER_DEEP,CV2,CV2_WECHAT
- support several input files
- add option to ignore duplicate otps
- write warnings and errors to stderr
- add output coloring
- rename project from extract_otp_secret_keys to extract_otp_secrets
- improve help
- clean verbose level output
- use Python type hints and check with mypy
- use f-strings
- clean up code
- add more tests
- calculate code coverage
- use src-layout: move files and folders
- support wheel packing
- enhance README.md
- bugfixes
    * fix -k -
    * fix utf-8 encoding on windows

Dockerfile

@@ -1,17 +1,32 @@
 FROM python:3.11-slim-bullseye
 
+# https://docs.docker.com/engine/reference/builder/
+
+# For debugging
+# docker build . -t extract_otp_secrets --pull --build-arg RUN_TESTS=false
+# docker run --rm -v "$(pwd)":/files:ro extract_otp_secrets
+# docker run --entrypoint /extract/run_pytest.sh --rm -v "$(pwd)":/files:ro extract_otp_secrets
+# docker run --entrypoint /bin/bash -it --rm -v "$(pwd)":/files:ro --device="/dev/video0:/dev/video0" --env="DISPLAY" -v /tmp/.X11-unix:/tmp/.X11-unix:ro extract_otp_secrets
+
 WORKDIR /extract
 
 COPY . .
 
-ARG run_tests=true
+ARG RUN_TESTS=true
 
-RUN apt-get update && apt-get install -y libzbar0 python3-opencv nano \
-    && pip install -r requirements.txt \
-    && if [[ "$run_tests" == "true" ]] ; then /extract/run_pytest.sh ; else echo "Not running tests..." ; fi
+RUN apt-get update && apt-get install -y \
+        libgl1 \
+        libglib2.0-0 \
+        libsm6 \
+        libzbar0 \
+    && rm -rf /var/lib/apt/lists/* \
+    && pip install --no-cache-dir -U -r \
+        requirements.txt \
+    && if [ "$RUN_TESTS" = "true" ]; then /extract/run_pytest.sh; else echo "Not running tests..."; fi
 
 WORKDIR /files
 
-ENTRYPOINT ["python", "/extract/extract_otp_secret_keys.py"]
+ENTRYPOINT ["python", "/extract/src/extract_otp_secrets.py"]
 
-LABEL org.opencontainers.image.source https://github.com/scito/extract_otp_secret_keys
+LABEL org.opencontainers.image.source https://github.com/scito/extract_otp_secrets
+LABEL org.opencontainers.image.license GPL-3.0+