introduce gene sets

an idea ive been playing w, relates to #330 and my comment there about needing to help ppl find gene pages if/ when we introduce those.

there are a lot of ways to produce gene sets, based of analysis results. we could even go out of our way to introduce workflows that do this, or modify existing ones to. i think thatd help ppl find genes of interest based on relevant biology. brc could make it part of its purview to keep track of gene sets users thought were of particular interest, link to gene pages for each member, and even launch downstream workflows on gene sets to better characterize them.

if we had a top menu section collecting all the entities we hang workflows off of, gene sets would gain a home there. note button to also make one manually, presumably by entering list of identifiers ncbi knows about or similar.

some workflows could hang off gene sets

and the workflow stepper i didnt actually draw 😂

admittedly a lot of handwaving around how to actually send gene sets from galaxy to brc and meaningfully track provenance.