Highlight multiple genomes

[MeAmAnUsername]

• [x] priority A: Create a window for selecting multiple genomes
  • [x] [required] Select multiple genomes from a list (checkboxes / CTRL+click)
  • [x] [optional] Filter genomes from list with a textbox (substring search, NOT CASE SENSITIVE)
  • [x] [optional] Select all genomes that match filters
• [x] Priority A: Highlight genomes (at least one of below, preferably both)
  • [x] Rainbow
  • [ ] gradient (not many genomes -> many genomes)
• [x] Priority C: Show genomes on edges
• [x] Priority D: Show a legend for which color corresponds with which color.