Checkbox/toggle component

[finngreig]

Hey Matheus,

Here's a checkbox component we've made - let us know if there's any changes you need :)

GIF for reference:

[matheusdavidson]

Hey @finngreig, that's a great addition! Thank you for your contribution.

I would add 2 points:

1. We need to find a way to let the user control colors, having default ones and option to change, something like was done in other components like button and progress-bar. I think for this one would make sense a smaller implementation like in progress-bar, maybe having colors for selected and deselected, what do you think?

This is the most challenging part of ng-tw, I'm still thinking of a unified way to control that, for now I'm adding ways to handle that inside each component.

2. I think we should decouple toggle from checkbox since they might have different implementations and use cases in the future, but this can be done in another time in near future.

[finngreig]

Hey @matheusdavidson - sounds good - I'll look into adding colour controls like that, and I'll also decouple the toggle. I'll keep this PR for the checkbox and put the toggle on a new one