feat(button): Refactor button component

[diogomateus]

What this PR does

This PR refactors the button component to use up to date icons, new variant names and replacing props names for a more standardised approach (children vs buttonTitle allowing ReactNodes).

How to test?

Run storybook and run button story.

Preview:

Checklist:

• I reviewed my own code
• The changes align with the designs I received
  Or give a reason why this does not apply:
• I have attached screenshot(s), video(s) or gif(s) showing that the solution is working as expected
  Or give a reason why this does not apply:
• I have updated the task(s) status on Linear
• All new media is optimized (images, gifs, videos)

Browser support

My code works in the following browsers:

• Firefox
• Chrome
• Safari
• Edge

[talo242]

Just a comment about deprecating leftIcon prop, but that change could be introduced in a subsequent PR so this one is good to go 👍

[a-maffei]

While reviewing the new Card component, I observed that the button text overflows vertically on smaller screens, especially when the copy is lengthy. A solution could be setting the button's height to auto and adjusting its padding. The rest looks great!

[diogomateus]

While reviewing the new Card component, I observed that the button text overflows vertically on smaller screens, especially when the copy is lengthy. A solution could be setting the button's height to auto and adjusting its padding. The rest looks great!

I think this should actually be fixed now, at least according to the visual regression report on app! 🤞

I think adapting the mobile layout would also help 😅 but I usually don't care that much about it on storybook