Adding Multipaper support

[DaJMaN4]

Is your feature request related to a problem? Please describe.
The plugin dosent recognize that a multipaper instance is a separate server to another multipaper instance

Describe the solution you'd like
Check if the server is running multipaper, just by checking the name of engine and then mark it as separate servers

Multipapers repository with some docs: https://github.com/MultiPaper/MultiPaper

Discord contact: dajman4