Code Cleanup

[pseusys]

In this pull request I revisited all the project code, and:

• Updated dependencies versions.
• Restructured files, separated different-purpose and merged same-purpose functions.
• Added a bunch of new managers to cover external resources (environment, GitHub communication and localization).
• Provided all the functions with clear names, params and type hints.
• Added unused coroutines cancellation.
• Created a codestyle checks.
• Collected all generated files into assets folder (and docker volume).
• Removed all NodeJS artifacts.
• Changed .env files with Makefile integration.

Action runs less than a minute locally.
Image size is .

[aravindvnair99]

Would be good to have #377 first before this PR is merged.

[anmol098]

Lgtm; 🙂