Simulation in Parallel Envs

Generate multiple parallel simulation environments with gym.make and record sensor and trajectory data.

---

⚡ Command-Line Usage

python embodied_gen/scripts/parallel_sim.py \
--layout_file "outputs/layouts_gen/task_0000/layout.json" \
--output_dir "outputs/parallel_sim/task_0000" \
--num_envs 16