Show duration and filesize in results (#1776)

* Add new query interface
* Refactor query builder
* Change Query interface
* Return duration and filesize in scene query
* Adjust UI for scene metadata
* Introduce new image query interface
* Change image Query interface
* Add megapixels and size to image query
* Update image UI

Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

pkg/models/mocks/query.go

@@ -0,0 +1,41 @@
+package mocks
+
+import "github.com/stashapp/stash/pkg/models"
+
+type sceneResolver struct {
+	scenes []*models.Scene
+}
+
+func (s *sceneResolver) Find(id int) (*models.Scene, error) {
+	panic("not implemented")
+}
+
+func (s *sceneResolver) FindMany(ids []int) ([]*models.Scene, error) {
+	return s.scenes, nil
+}
+
+func SceneQueryResult(scenes []*models.Scene, count int) *models.SceneQueryResult {
+	ret := models.NewSceneQueryResult(&sceneResolver{
+		scenes: scenes,
+	})
+
+	ret.Count = count
+	return ret
+}
+
+type imageResolver struct {
+	images []*models.Image
+}
+
+func (s *imageResolver) FindMany(ids []int) ([]*models.Image, error) {
+	return s.images, nil
+}
+
+func ImageQueryResult(images []*models.Image, count int) *models.ImageQueryResult {
+	ret := models.NewImageQueryResult(&imageResolver{
+		images: images,
+	})
+
+	ret.Count = count
+	return ret
+}