Addition of explicit value of sliders

[Cipulot]

This commit aims to provide precise visual feedback on the current value at which the slider is at. This helps in case the slider is used for precise value input that benefits from a linear input method.

The value updates on the fly when the slider is moving and it's solid with the slider element when resizing the webpage view, to avoid it being wrongly rendered.

Here's a preview of the feature:

[Cipulot]

Implemented a toggle that enables this feature or leaves it disabled:

The default value has been set to FALSE.