include automatically generated workflow schematics ('tube maps')

[m-jahn]

• tube maps are a concise way to efficiently visualize scientific workflows
• automatic rendering of such maps from workflow github repos should be possible
• an alternative would be to provide a config option that users can use to link to workflow schematic
• for the look of the catalog, the automatic solution would be better
• the tool Snakevision exists which can create such tube maps automatically -- could be integrated into the catalog generation

example:

https://github.com/OpenOmics/snakevision/blob/main/examples/rna-seek_dag.svg