pvr: add options and support for anime (#17)

* pvr: begin adding options

* pvr: add ability to configure add behaviour via config

* pvr: add skip_anime

* pvr: do not continue processing item if lookup failed or add to pvr failed

cmd/nabarr/pvr/pvr.go

@@ -14,7 +14,7 @@ import (
 type PVR interface {
 	Type() string
 	GetFiltersHash() string
-	AddMediaItem(*media.Item) error
+	AddMediaItem(*media.Item, ...nabarr.PvrOption) error
 	ShouldIgnore(*media.Item) (bool, string, error)
 	Start() state.State
 	QueueFeedItem(*media.FeedItem)