Enums in response model with no nullability or default value will make the API very fragile as each extension to the enum will break the API for some clients, but a lot of enums actually do have an unknown value which should be used as a default. This set all model properties that are non-nullable using an enum that has an Unknown member in 10.10, except MediaStream.VideoRangeType which is refactored in #13277
Mark SearchHint.MatchedTerm as nullable
Original-merge: ab6c2424dbb6b0e0a046b746d564cfc78103f8fb
Merged-by: Bond-009 <bond.009@outlook.com>
Backported-by: Joshua M. Boniface <joshua@boniface.me>
* Add analyzers to MediaBrowser.XbmcMetadata
* Enable TreatWarningsAsErrors for MediaBrowser.XbmcMetadata
* Add analyzers to MediaBrowser.WebDashboard
* Enable TreatWarningsAsErrors for MediaBrowser.WebDashboard
* Disable SA1600 in favor of CS1591
