Enhance email categorization with advanced keyword matching and ML

[J-DRD]

Implement advanced email categorization rules using NLP and machine learning techniques.

• analyzeEmail.js

  • Add natural language processing (NLP) libraries and machine learning classifier.
  • Update analyzeEmail function to use new categorization rules.

• config.yml

  • Add high-priority keywords and phrases for email categorization.
  • Include settings for machine learning-based categorization.

• README.md

  • Update documentation to include information about new categorization rules.
  • Provide examples of advanced keyword and phrase matching.
  • Explain machine learning-based categorization process.