Add setBounds method to Slider

[vaadin-bot]

Originally by @tepi

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Due to changes in enforcing the min/max values within the Slider component, it might be more usable to provide a way to set the min/max values with a one call, e.g. Slider.setBounds(double min, double max).

This way the user would not have to ponder about in which order they should set the min/max values wrt. the default values in the Slider component.

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Imported from https://dev.vaadin.com/ issue #8697

[stale[bot]]

Hello there!

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