ONLYOFFICE plugin support JWT secret token

Hi,

Since FileRun official plugin still not support a ONLYOFFICE server with JWT secret token, I did a modified plugin based on FileRun official version, adding support for JWT secret token. For those who need it in a hurry just like me, we can use this version first, until official version finally comes out.

I uploaded this plugin to github:

https://github.com/onisuly/filerun-onlyoffice2