Use extension if provided in resizer options

[mjauvin]

This is required to allow converting images to other formats (e.g. webp). Otherwise the resulting file will have the correct extension but the wrong image format.

Replaces #9 since the original repo got deleted.

The following code can be used as a workaround in the meantime:

Event::listen('system.resizer.processResize', function ($resizer, $tempPath) {
    // Get the resizing configuration
    $config = $resizer->getConfig();
    $options = array_get($config, 'options', []);

    list($base, $ext) = explode('.', $tempPath);
    $newPath = $base . '.' . array_get($options, 'extension', $ext);

    // Resize the image
    $resizedImageContents = \Winter\Storm\Database\Attach\Resizer::open($tempPath)
        ->resize($config['width'], $config['height'], $options)
        ->save($newPath);

    if ($newPath != $tempPath) {
        File::move($newPath, $tempPath);
    }

    // Prevent any other resizing replacer logic from running
    return true;
});

[mjauvin]

@LukeTowers any reason against merging this? Converting a jpg to a webp won't work without this fix.

[github-actions]

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[mjauvin]

@LukeTowers why did you close this?

[bennothommo]

@mjauvin I think these were automatically closed when Luke deleted the wip/1.2 branch. Would you be able to recreate the PRs targeting develop?

[LukeTowers]

@bennothommo is correct, it was unintentionally auto closed.