Add Bowtie runner

[erosb]

Implementers guide https://bowtie-json-schema.readthedocs.io/en/latest/implementers/

[big-andy-coates]

Hey @erosb, I was thinking I'd pick this one up for you if you want? If so please assign to me.

Regarding implementation...

Do you want me to dump all the functionality in the bowtie repo, or were you thinking of creating something more in your control in this repo, or another under your ownership, and then call that from the Bowtie repo?