added a roadmap

roadmap.md

@@ -0,0 +1,10 @@
+# Planned Features
+
+- Add a songs tab (should replace F4 Favourites, favourite songs will still be there)
+  - A view of all songs should be a paged datatable
+- Shuffle artist (shuffle play all the songs by an artist)
+- better playlist UI
+- Better albums UI
+- Config for no fancy images UI
+- Auto cache deletion (if not played in x number of days remove)
+- Accurate play time tracking server (optionally) linked to player