Bring back local search / offline functionality for offline Roon Core [restored with Build 1365]

[Mike_Lowndes]

This is from the very top of this thread over a year ago : danny:

@danny

we used to have two search algorithms. One ran locally and one ran remotely. The local one was quite poor because it lacked the infrastructure to keep a good search engine operational. But because of offline support, we needed to keep both functional. The online one keeps getting better but the one that lives in the Core hasn’t been improving at the same pace. Search is a major pain point for many of our users and it’s a shame because many of those same users are using the local engine often. On top of that, being, consistency is extremely frustrating. With 2.0 we killed the local engine. So now all search requests go through a single unified engine that will continue to improve. But if we advertise offline support, then search has to work offline, which has been problematic.