add google photos support & fix preview

platform/26.2/src/main/java/dev/photosync/platform/impl/GameAdapter.java

@@ -92,6 +92,18 @@ public final class GameAdapter implements GameContext {
         Util.getPlatform().openFile(target.toFile());
     }
 
+    /**
+     * Hands a URL to whatever the desktop opens links with.
+     *
+     * <p>Minecraft's own opener, the one behind every link in the game's menus,
+     * rather than {@code java.awt.Desktop}: on macOS the game holds the main
+     * thread for GLFW and an AWT call from here would never come back.
+     */
+    @Override
+    public void openUrl(String url) {
+        Util.getPlatform().openUri(url);
+    }
+
     @Override
     public String minecraftVersion() {
         return minecraftVersion;