Peer Review Feedback Addressed: Restructred datasets + refactored data filepaths

[SaiUbc]

Feedback from peer review:

• addressing @diaazavery 's feedback in peer review about sorting the datasets further into raw and processed folders as our project has many datasets already and it might be easier for navigation to create sub folders. The following changes can be seen in this commit: https://github.com/DSCI-310-2024/DSCI-310_Group-Project_Group8_Purchasing-Intent-Analysis/commit/77ce6b9a4fb762276f8a32e7abf70a5a1796dec4