Add LoadingBars component

[Romel Perez]

Add loading component with undefined and defined variations.

• Add LoadingBars component.
• Add determinate: boolean = false prop to enable loop animation.
• Add determinate: boolean = true prop to enable progress value.
• Add progress: number = 0 prop. If determinate is enabled, it will determine the progress status from 0 to 100.
• Add full: boolean = false prop to make the element full screen.
• Add size: number = 1 prop as a factor multiplier for the size of the loading.
• Add speed: number = 3 prop to adjust the animation rate speed.