[rewrite] Major changes to code - switched to postgres, added initial backend docker files

backend/app/services/product/product_helper.py

@@ -1,5 +1,6 @@
 import imghdr
 
+
 def is_base64_jpg(decoded_string) -> bool:
     try:
         image_type = imghdr.what(None, decoded_string)

backend/app/services/product/product_list_service.py

@@ -5,6 +5,7 @@ import app.messages.api_errors as errors
 
 from app.db import product_db
 
+
 def product_list(page: int):
     try:
         result_products = product_db.fetch_products(page)