[FEATURE] External Storage integrations

[SalahAdDin]

Is your feature request related to a problem? Please describe. Not all small companies have the budget for paying either local storage or Amazon S3, so we begin working with cheaper CDNs like Cloudflare or Cloudinary.

Right now, Frappe only works with local storage and has an S3 integration plugin, but no other possible ways to integrate storage.

Describe the solution you'd like It would be nice to have an official API or application for universal storage, or, at least, for Cloudinary storage.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context We are a small company and we are testing ERP Next with docker in a local machine before hosting a VPS online.