Make photo library offline-first and fix video thumbnails

Server/services/thumbnails/pkg/service/grpc/v0/service.go

@@ -156,6 +156,7 @@ func (g Thumbnail) handleCS3Source(ctx context.Context, req *thumbnailssvc.GetTh
 	}
 
 	ctx = imgsource.ContextSetAuthorization(ctx, src.GetAuthorization())
+	ctx = imgsource.ContextSetVideoSource(ctx, strings.HasPrefix(sRes.GetInfo().GetMimeType(), "video/"))
 	r, err := g.cs3Source.Get(ctx, src.GetPath())
 	switch {
 	case errors.Is(err, terrors.ErrImageTooLarge):
@@ -245,6 +246,7 @@ func (g Thumbnail) handleWebdavSource(ctx context.Context, req *thumbnailssvc.Ge
 	if src.GetWebdavAuthorization() != "" {
 		ctx = imgsource.ContextSetAuthorization(ctx, src.GetWebdavAuthorization())
 	}
+	ctx = imgsource.ContextSetVideoSource(ctx, strings.HasPrefix(sRes.GetInfo().GetMimeType(), "video/"))
 
 	// add signature and expiration to webdav url
 	signature, expiration := imgURL.Query().Get("signature"), imgURL.Query().Get("expiration")