Re structure files

[jocxfin]

Changes:

• Character Set Preparation Optimization: Refactored character set preparation in password generation to improve efficiency and maintainability.
• Cache Utilization for Static Content: Implemented caching for serving static files like manifest.json and service-worker.js, reducing server load and improving response times.
• Restructured files to keep the project clean and to help future coding

To use:

docker pull jocxfin/pwgen:latest
docker run -d -p 5069:5069 jocxfin/pwgen:latest

Offline mode:

docker pull jocxfin/pwgen:latest
docker run -d -e NO_API_CHECK=true -p 5069:5069 jocxfin/pwgen:latest

With environmental variables defining settings:

docker pull jocxfin/pwgen:latest
docker run -d -p 5069:5069 \
  -e NO_API_CHECK=false \
  -e PW_LENGTH=12 \
  -e PW_INCLUDE_UPPERCASE=true \
  -e PW_INCLUDE_DIGITS=true \
  -e PW_INCLUDE_SPECIAL=true \
  -e PW_EXCLUDE_HOMOGLYPHS=false \
  -e PP_WORD_COUNT=4 \
  -e PP_CAPITALIZE=true \
  -e PP_SEPARATOR_TYPE=space \
  -e PP_USER_DEFINED_SEPARATOR='' \
  -e PP_MAX_WORD_LENGTH=12 \
  -e PP_INCLUDE_NUMBERS=true \
  -e PP_INCLUDE_SPECIAL_CHARS=true \
  -e PP_LANGUAGE=en \
  jocxfin/pwgen:latest

Quick and straightforward improvements for a better tool.