Add SR2024 Venue Maps to the Competition event page

[PeterJCLaw]

These are extracted from the CI build of the floorplans repo:

• https://github.com/srobo/comp-floorplans/commit/3aa33866693b22a43e73694140356f0a3924459d
• https://github.com/srobo/comp-floorplans/actions/runs/8270121158/artifacts/1323558880

Files map-with-teams.{pdf,png} renamed to venue-map.{pdf,png}.