Ability to center images with markdown

[sp-jordan-violet (Jordan Violet)]

Today, we use:

<div align="center">
[image]
</div>

It would be nice if image code had an option to center as well. Something like:

![image|100x499|centered](upload://zPH5RYitXN4nR9PUKTp2fJT7Xta.png)

[Lilly]

i was just working on a image alignment theme component and added this to it.