Need "--ftp-no-check-certificate" option in ftp

[danmodini]

Pre-Submission checklist

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

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

1.55.1

What problem are you trying to solve?

Two hostings I use have generic certificate for ftp and I must use rclone with --ftp-no-check-certificate option but I can't find this option in rcx settings (only for ftp). Thank you very much!

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