Build Docker containers with Axii pre-installed

Adds jobs and required files to build Docker containers with Axii for Ubuntu Bionic and Jammy to use in other projects if a release is tagged.

Notable changes required to achieve this goal:

• axii self install now has a --yes option and uses common.input_confirm to properly react to disabled prompts
• Improved config handling
  • New config print_logo (disabled in CI because it doesn't work here)
  • Unit tests for config
  • Changes now allow for help and auto-completion in axii config (#207)
  • Also add update_job_number
• Revamped apt dependency handling for Axii, now part of requirements/apt
• Revamped bootstrap.sh
• Improve Code quality here and there