Feature: Direct upload to FTP/HTTP

[jpbarraca]

The v4l2rtspserver currently saves images to SDCARD, which can be processed by using a script.
As many other cameras do, direct upload to a remote server could be an interesting feature.
This can be can be achieved by using a script as an hook, which is called after the file is saved. The inconvenient is that the card will be written (frequently?), degrading its life expectancy.
Alternatives, that I can think of are:

• mounting the DCIM folder using TMPFS and then upload the image: works out of the box but will consume a chunk of RAM.
• added support for direct upload in the code (using libcurl?), in a separated thread: adds a dependency to the server, but streamlines the process, while possibly taking much less resources.

Is there a opinion regarding such feature, and how to proceed with it?