Code cleanup

[ralienpp]

• Make it use waitress in production
• Enforce automated checks with black pylint bandit
• Document the process of obtaining and forming the Archive file
• Use memory mapped files (or otherwise avoid writing data to the disk)
• Provide a health status page with a minimalist introspection dashboard to understand what the server is currently doing
• Add some docstrings here and there to explain what this program is doing in general