AMP, which is essentially Google's answer to Facebook's fast-loading Instant Pages, first launched on Google's mobile search results pages but it's now being integrated into a wider number of products. As AMP reaches a wider audience, publishers are obviously also interested in being able to sell a wider range of ad types on these pages, too. The AMP format currently features basic ad support already, but as the company announced today, AMP will soon get support for three new ad types…