docker image with qreader, 2nd image without qreader

- organize imports
- add qreader pytest.mark
- relaxed mode for pytest
- run tests in docker
- more tests

Dockerfile_no_qr_reader

@@ -0,0 +1,11 @@
+FROM python:3.11-alpine
+
+WORKDIR /extract
+
+COPY . .
+
+RUN pip install protobuf qrcode Pillow
+
+WORKDIR /files
+
+ENTRYPOINT [ "python", "/extract/extract_otp_secret_keys.py" ]