Speed up the app

[raphodn]

Story

• load less prices via the api (currently 50)
• "load more" button
• infinite scroll : see Only require "Load more" button to be clicked once when viewing results (infinite scroll) #529
• store data in cache instead of calling the api each time
• load components dynamically

[ArturLange]

According to the Google Page Insights there is a lot to be done on the technical side e.g. cache, compression, removing unused JS code (maybe with tree shaking).
Maybe those would be reasonable next steps?

https://pagespeed.web.dev/analysis/https-prices-openfoodfacts-org-app-prices/ngzvtaihrs?form_factor=mobile