Add support of title element

We often need to show helping text with icons. If we can see the support of `` element as [referred here](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/title) it would be great.

The issue does not name a file, test, or entry point. Start by locating how Feather icon SVGs are generated or rendered, then determine where support for an SVG element belongs. Done means icons can include the requested helping text and the behavior is covered by an appropriate test.

Written by the indexing model from the issue text.