worked on making the project more inclusive by enabling platform agnostic repo fetching

[Pippiblip]

1. made the project more inclusive by setting up backend/service/repo_fetcher.py now it supports gitlab, codeberg, bitbucket etc
2. GE-Lab/SDGs-classifier had only model weights on hugging face so created another server which allowed me to inference the model and use it accordingly
3. completed the inferencing part successfully

these are all that i achieved!!

[chanelrichardson]

This code looks good!

One thing, I would like to remove commented out functions before I push this to main. If you want to keep them, I would suggest making a new branch where you keep those commented out functions, and then we don't have to merge them into the main public facing branch.