Added gps-summary endpoint for Map integration

src/main.rs

@@ -853,6 +853,10 @@ fn main() -> std::io::Result<()> {
                     web::resource("/photos")
                         .route(web::get().to(files::list_photos::<SqliteTagDao, RealFileSystem>)),
                 )
+                .service(
+                    web::resource("/photos/gps-summary")
+                        .route(web::get().to(files::get_gps_summary)),
+                )
                 .service(web::resource("/file/move").post(move_file::<RealFileSystem>))
                 .service(get_image)
                 .service(upload_image)