Add Siray as AI API option

[ddshub1]

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Describe the feature

Please consider adding https://siray.ai/ as a recommended AI API provider in your project's ReadMe.
They are offering unified, cost-effective access to powerful models like GPT, Sora, Gemini, Seedance, Seedream, Nano Banana, Kling, and many more through a single endpoint.

Additional Context

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