Allow to download screenshots of Capablanca games

[programarivm]

At this moment, src/Controller/DownloadImageController.php doesn't allow to download screenshots of Capablanca chess games as shown in the animation below.

However, the /download_image endpoint should accept a new parameter called variant, this way a new $board object can be created accordingly to be then passed to Chess\Player\PgnPlayer.

For further information on how a $board is initialized please visit:

• php-chess/tests/unit/Variant/Capablanca80/BoardTest.php

This issue is quite similar to the following one which has been solved already:

• Allow to download videos of Chess960 and Capablanca games #24

Remember:

There is an easy quick way to get the API up and running without an SSL certificate for when testing endpoints that don't require a database connection, e.g., api/download_image or api/download_mp4. In such cases you may want to use PHP's built-in web server.

Keep it up, and happy coding and learning!