Add image streaming support

[boboldehampsink]

What:

• Bug Fix
• New Feature

Description:

Adds image streaming support: https://platform.openai.com/docs/api-reference/images-streaming

Related:

[iBotPeaches]

This looks really nice and passes everything. Have a sample code snippet I can use to test this for real? I want to add a new sample to my tests - https://github.com/iBotPeaches/openai-php-laravel-test/blob/master/app/Console/Commands/ImageTest.php

[boboldehampsink]

@iBotPeaches

$prompt = 'Blend these two images';
$image1 = fopen('image1.png', 'r');
$image2 = fopen('image2.png', 'r');
$stream = OpenAI::images()->editStreamed([
    'model' => 'gpt-image-1',
    'prompt' => $prompt,
    'image' => [
        $image1,
        $image2,
    ],
    'partial_images' => 2,
]);

foreach ($stream as $event) {
    $item = $event->toArray();

    ... // Return SSE's for example
}

[iBotPeaches]

Reviewed and looks good. Confirmed with real life test here - iBotPeaches/openai-php-laravel-test@66a55e5

[iBotPeaches]

thanks!