beginning of adding Jellyfin support

backend/mediaprovider/subsonic/subsonicserver.go

@@ -0,0 +1,19 @@
+package subsonic
+
+import (
+	subsonicCli "github.com/dweymouth/go-subsonic/subsonic"
+	"github.com/dweymouth/supersonic/backend/mediaprovider"
+)
+
+type SubsonicServer struct {
+	subsonicCli.Client
+}
+
+func (s *SubsonicServer) Login(username, password string) error {
+	s.User = username
+	return s.Client.Authenticate(password)
+}
+
+func (s *SubsonicServer) MediaProvider() mediaprovider.MediaProvider {
+	return SubsonicMediaProvider(&s.Client)
+}