Model refactor, part 3 (#4152)

* Remove manager.Repository
* Refactor other repositories
* Fix tests and add database mock
* Add AssertExpectations method
* Refactor routes
* Move default movie image to internal/static and add convenience methods
* Refactor default performer image boxes

internal/api/routes_downloads.go

@@ -10,6 +10,10 @@ import (
 
 type downloadsRoutes struct{}
 
+func getDownloadsRoutes() chi.Router {
+	return downloadsRoutes{}.Routes()
+}
+
 func (rs downloadsRoutes) Routes() chi.Router {
 	r := chi.NewRouter()