Add ability to sepecify uWSGI buffer size via environment variable

[bryanculver]

Closes: #1595

What's Changed

• Added sed override for uWSGI buffer-size limit via $NAUTOBOT_UWSGI_BUFFER_SIZE
• Extended default buffer-size into docker/uwsgi.ini to better expose value and simplify sed operation
• Updated Docker documentation to include new NAUTOBOT_UWSGI_BUFFER_SIZE variable

TODO

• Explanation of Change(s)
• NA Attached Screenshots, Payload Example
• NA Unit, Integration Tests
• Documentation Updates (when adding/changing features)
• NA Example Plugin Updates (when adding/changing features)
• NA Outline Remaining Work, Constraints from Design