Add Push Constant Support

[yshekel]

Description

I recently implemented push constant support for a VUDA fork that I have. This feature allows efficient passing of small amounts of data (like configurations or flags) from the CPU to the GPU without binding a buffer, leveraging Vulkan's push constant capabilities.

I'd like to propose contributing this implementation as a pull request if the maintainers are interested.

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Use Case

Push constants are particularly useful for:

• Passing small data structures or values (e.g., configuration flags, transformation matrices) to shaders without creating and binding a buffer.
• Improving performance by minimizing GPU resource binding overhead, as push constants are directly accessible in shaders.