Zhiyuan/slider

[zhiyuan-Z]

Created a Slider with the following options based on the UI design:

• Developers can choose the color of the slider component from variant choice by passing props.
• Developers can choose the size of the component by providing props.
• Developers can choose to have number marks on the slider track by providing value in props.
• Developers can enable the slider component as a range slider from props. The range slider provides two knobs in order to take the input with a range of values.
• Developers have the option to enable vertical slider from props
• Developers can choose between discrete and continuous input mode for the slider from props
• Developers can disable the input of the component from props.

[zhiyuan-Z]

Fixed issues mentioned in the code review.