Scale image using alt text syntax

[regalialong]

Obsidian has its own syntax for scaling images by defining the resolution in the alt text of an image (ignoring how yucky that is), the syntax is described here in the docs but for brevity:

• ![[image.extension|666]] scale "according to its original aspect ratio"
  • Obsidian sets width on image element to 666 for this
  • This is technically not preferred for web content because this will cause a layout shift as width and height need to be defined for the browser to preallocate the space before the image loads in, but ¯\_(ツ)_/¯
• ![[image.extension|666x666]] to set exact resolution
• ![[image.extension|alt-text|666]] allows adding alt text while also setting the width of the image
  • o2w doesn't fail but (correctly) only adds the alt text currently when doing this
• Also valid for external locations per ![666](https://externalfilelocation.example/image.extension)

We don't always control the size of images, especially externally linked ones, so having a way to scale them would be useful.