title: How to set shape attribute of clr-icon
body: <p>I am using <code>&lt;clr-icon shape=""/&gt;</code>. I would like to make its <code>shape</code> dynamic. If I specify <code>&lt;clr-icon [shape]="shapeValue"/&gt;</code> it throws an error shape is not a known property of <code>clr-icon</code></p>