Clear text styles

[AdrianFahrbach]

Describe the requested icon An icon that for an button that removes styling from text. This is useful for e.g. rich text editors.

Screenshots

Additional context

• This request is related to #246.
• There is no standard for this kind of icon, but it seems like the example in my screenshot is the most popular one (see google search results)
• I attached my own version of this icon which is based on text-t

[siliconeidolon]

This would be very useful for our rich text editor. Currently using the broom which isn't nearly as clear.

[rektdeckard]

We're going to go ahead with text-t-slash as requested in #277, hope this works.