Removed Beego routing/controllers, converted to Chi.

Also introduced Wire for dependency injection

engine/wire_providers.go

@@ -0,0 +1,13 @@
+package engine
+
+import "github.com/google/wire"
+
+var Set = wire.NewSet(
+	NewBrowser,
+	NewCover,
+	NewListGenerator,
+	NewPlaylists,
+	NewRatings,
+	NewScrobbler,
+	NewSearch,
+)