Custom path for SVG artefacts from markdown render

[jeswr]

Is your feature request related to a problem? Please describe.
I would like for the image artefacts generated when rendering a markdown document to be able to be placed at a location which is not in the same location as the markdown document.

Describe the solution you'd like
An optional --artefact-path parameter to be introduced to specify the folder where generated images should be placed.

Describe alternatives you've considered
Copying the images after generation and writing a script to update the path references in the markdown document.

Additional context
I am using this tool on my website and would like for the SVGs to be placed in a /static folder.