[FEATURE REQUEST] Implement pipeline style design to accommodate new module

[anzharip]

Is your feature request related to a problem? Please describe.
Currently the app is comprised of only one file, with all the functionality is stored inside that one file.

Describe the solution you'd like
I'd like to implement pipeline style mechanism (inspired by https://python-social-auth.readthedocs.io/en/latest/pipeline.html and https://refactoring.guru/design-patterns/chain-of-responsibility) so we can extend new functionality by adding new module to the pipeline.

Describe alternatives you've considered
N/A

Additional context
N/A