feat: transclude improvements

[HyperEpsilon]

This PR does three things.

1. Move the transcluded image regexs into the regexes file and import it, reducing duplicate code
2. add bmps to the list of transcluded images
3. improve the transcluded images regex to account for images in tables that have an escaped pipe

Things to note: svgs are handled in a separate step than other images and I haven't looked at them yet. There's a good chance that svgs embeded in tables with custom data after the pipe don't work, but I haven't investigated that yet