Add CADD for indels

[jemten]

The team behind CADD provide precomputed CADD scores for SNVs. The CADD scores for Indels needs to be calculated dynamically. Depending on how komplex the workflow becomes this might be splitted out into it's own subworkflow under SNV/INDEL annotation.

[maxulysse]

We're using the CADD plugin in VEP in the 2.7.1 sarek, haven't added that possibilities to the vep modules yet, since it's a bit messy: https://github.com/nf-core/sarek/blob/68b9930a74962f3c42eee71f51e6dd2646269199/main.nf#L3695
(actually it's the genesplicer one that is messy).
I'd love to see your ideas about that

[jemten]

@maxulysse
Nice! Are you using the pre-computed indel scores or are you calculating them yourself?

[maxulysse]

Using the precomputed ones

[ramprasadn]

nf-core/modules#3216 I have attempted to CADD to nf-core/modules. Let me know what you guys think!

[jemten]

done