Enable to mount or create a remote for "Uptobox"

[rosmander]

Pre-Submission checklist

• There is no existing issue that already asks for this feature.
  
• The feature already exists in rclone (on your PC or in Termux)
• I am prepared to help make this feature

What version of RCX are you using (About -> App version)?

1.12.2

What problem are you trying to solve?

Good, I would like to mount with the app my "uptobox" unit, not being able to create it directly from the application, I put the external rclone.conf created by me on pc, and it gives me error in the app apparently for not being supported. However, on pc, with rclone I can see and use perfectly my remote through commands or even with rclonebrowser.

What should RCX be able to do differently to help with this problem?

I would like if it were possible that you could implement the option of "uptobox" to be able to use it on my android devices and greatly expand my storage space.

Thank you very much for your attention.