[#5]Implement-email-processor-logic-and-email-templates

.flake8

notifications_consumer/config.py

notifications_consumer/processors/email/processor.py

...fications_consumer/processors/email/templates/sample.html

notifications_consumer/processors/email/templates/sample.txt

...sumer/processors/email/templates/simple_notification.html

...nsumer/processors/email/templates/simple_notification.txt

notifications_consumer/processors/email/utils.py

scripts/docker-send-email.py

scripts/send-email-test-example.py