Support for adding multiple komga instances and switching

[dyphire]

Currently, Komelia only supports adding a single komga instance, which is extremely inconvenient if you want to access other komga instances, you can only exit the current instance and add a new one.
It is hoped that it can support adding multiple komga instances and support switching.

[CpHeat]

this! it would be aesome to be able to have one komga for comics and one for mangas for example with specific komf configuration for each