BenchBot Add-on: Semantic Scene Understanding (SSU) pack

Use this add-on to add complete support for Semantic Scene Understanding (SSU) to your BenchBot install. This pack includes the following BenchBot add-ons as dependencies:

• tasks_ssu
• envs_isaac_develop
• envs_isaac_challenge
• robots_isaac
• ground_truths_isaac_develop
• eval_omq

The ground_truths_isaac_challenge add-on is also available, but not for public use while the Semantic Scene Understanding Challenge is still ongoing.