Caption support (#2462)

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

pkg/models/model_scene.go

@@ -221,3 +221,13 @@ func (s *Scenes) Append(o interface{}) {
 func (s *Scenes) New() interface{} {
 	return &Scene{}
 }
+
+type SceneCaption struct {
+	LanguageCode string `json:"language_code"`
+	Filename     string `json:"filename"`
+	CaptionType  string `json:"caption_type"`
+}
+
+func (c SceneCaption) Path(scenePath string) string {
+	return filepath.Join(filepath.Dir(scenePath), c.Filename)
+}