feat(ImageViewer): support change zoomSpeed

[h2ls]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe the problem.

Currently, the ImageViewer component's mouse wheel zoom functionality uses a fixed zoom step (0.1). This lacks flexibility for users who need faster/slower zoom responsiveness, especially when handling high-resolution images or specific UX requirements.

Describe the solution you'd like

Introduce a new parameter ZoomSpeed to dynamically adjust the zoom increment per mouse wheel step:

Add a double parameter ZoomSpeed with default value 0.
Modify the wheel event handler to apply ZoomSpeed instead of a hardcoded value.
Ensure backward compatibility (retain current behavior if ZoomSpeed is unset).

Additional context

No response

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