To design an AutoIt GUI with html, no there are no tools at the moment.
However, you can embed an Internet Explorer activeX object into a GUI, and load the html into that. For an example see _IECreateEmbedded. That can be animated with javascript and jquery in the same way as any other web page.
If it is just animating GUI elements you are interested in, then doing it natively will be a lot more resource friendly. Depending on what animation you want to do, it can be as simple as just setting the control position in a loop, using one of the WinAPI functions like AnimateWindow, or doing the graphics yourself using GDI+. There are plenty of examples of all three on the AutoIt Forums.