Association and new endpoint for image fetching

[lincoln0623]

### Sensitive Changes

• I'd made some changes to the model files to associate both reviews and guest model to fetch both reviews and guest data in a shot in coreData.js -> getReviews route

### Completion

• Removed redundant and outdated 'guest' dummy data
• Added and Tested out getImageForReview route to fetch all the image data url for frontend
• Added Logger.log for error handling and set ambiguous UERROR to ERROR
• Change to the correct middleware to save file images (commented out section is for further development purposes which will fetch guest and host id from url query / parameters to use in the data form for review submit)
• Some Minor Changes :
  -Removed unused field in the post method (sender and receiver)
  -Added a few accepting field for updating the review ( used in like reviews)

### Question!
Since last PR until now, I haven't get the FK constraint error anymore. How did we get the error last time we tried it out before the code review? I would like to know on how to reproduce the error again in purpose to address the error correctly.