Add an intro skipper feature

[kris3713]

Summary

Just as the title describes.

Basic Example

The intro skipper plugin should use the popular intro skipper plugin by jumoog to skip intros in TV show episodes and skip credits as well.

Drawbacks

None. I can't think of any so far.

Unresolved questions

None.

[PartyDonut]

This is already supported.
For Fladder > 0.4.4 make sure you're using the latest Jellyfin because that version uses mediasegments (intro skipper uses those now).