Add dsb component

[wxicu]

Changelog

Add dsb component: which splits the dsb function into two components, the first takes care of recognising the barcodes for foreground and the background, while the second does the actual normalization

Checklist before requesting a review

• [x] I have performed a self-review of my code

• [x] Conforms to the Contributor's guide

• Check the correct box. Does this PR contain:

  • [ ] Breaking changes
  • [x] New functionality
  • [ ] Major changes
  • [ ] Minor changes
  • [ ] Documentation
  • [ ] Bug fixes

• [x] Proposed changes are described in the CHANGELOG.md

• [x] CI tests succeed!

[rcannood]

Hi @wxicu ! Just following up on this PR. Do you have any thoughts about the comments I placed?

[wxicu]

Hi @wxicu ! Just following up on this PR. Do you have any thoughts about the comments I placed?

Hey really sorry for my late response. Finally have time now to contribute on this. I will go through all the comments and update it soon! Again, really sorry for the delay