feat: AI upload is now functional

[abhitrueprogrammer]

Changes:

• create a route to upload pdf or image that calls AI from mistral.ts to get tags.
• Get the first page of the pdf as image or get the first image that the user uploaded
• Refactored analyzeImages to take in images instead of image directory.
• Created the processAndAnalyze function that takes in the encoded image and splits our the analyzed results using analyze Images function
• Created a function that renders 1st page of pdf to img.
  • Special thanks to @mglsj for suggesting putting this function on client side, without which this pr wouldn't be there
• Other chores and goodies that I can't remember