slider: needs option to hide arrows and lines (at the bottom)

[LazyGuy21No]

Feature Request

Please implement option to hide arrows on slider

Is your feature request related to a problem? Please describe.
Slider is great, but I often want to use it with only one picture as a replacement so to say for a fullscreen hero widget and then... the arrows look awkward.

Describe the solution you'd like
hide_arrows = true
Could hide the slider's arrow: needs option to hide arrows and lines at the bottom

[stale]

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