Ribbon/SplitThreader integration

[dnil]

Is your feature request related to a problem in the current program to new available techology or software? Please describe and add links/citations if appropriate.

Ribbon https://github.com/MariaNattestad/Ribbon appears to be a customer enjoyed SV viz program, especially on the LRS side, although it does support SR as well. They used to only work with some bespoke bedpe thingy, but have a new release since of a few weeks integrating VCF support. It is apparently actively maintained, pretty and probably a lighter tonic to instruct use of than switching back and forth between IGV.js and the SV list view.

Describe the solution you'd like
Integrate a Ribbon view on SVs. This would involve preparing a "session" json, much like the js config for IGV.js, setting URLs of different resource files to serve (bam, vcf, coverage bed), and giving a locus to start the view in the URI as get options https://github.com/MariaNattestad/Ribbon/blob/main/docs/release_notes_v2.md#specify-a-locus-in-the-url.

Additional context
This is a bit exploratory still, so before we go full implementation, lets pilot a bit and see that there are no major showstoppers we missed.

[dnil]

• cram file support (cram file support? MariaNattestad/Ribbon#123)
• bed cov files 100Mb hard limit currently (10k windows mosdepth suggested) - compressed ok? d4?
• range aln/vcf requests?
• CORS ok?
• VCF MIP/Balsamic SV compatible (TIDDIT in particular?)