feat: return BlurHash for unsplash search results

pkg/modules/background/background.go

@@ -27,6 +27,7 @@ type Image struct {
 	ID       string `json:"id"`
 	URL      string `json:"url"`
 	Thumb    string `json:"thumb,omitempty"`
+	BlurHash string `json:"blur_hash"`
 	// This can be used to supply extra information from an image provider to clients
 	Info interface{} `json:"info,omitempty"`
 }

pkg/modules/background/unsplash/unsplash.go

@@ -181,6 +181,7 @@ func (p *Provider) Search(s *xorm.Session, search string, page int64) (result []
 			result = append(result, &background.Image{
 				ID:       p.ID,
 				URL:      getImageID(p.Urls.Raw),
+				BlurHash: p.BlurHash,
 				Info: &models.UnsplashPhoto{
 					UnsplashID: p.ID,
 					Author:     p.User.Username,