Add balanced navigation tasks (navsim format) (part 4)

navigation_tasks/grids/scene_03m_041__pal_tiago.npz

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navigation_tasks/grids/scene_03m_041__turtlebot3_burger.json

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navigation_tasks/grids/scene_03m_041__turtlebot3_burger.npz

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navigation_tasks/grids/scene_03m_041__turtlebot3_waffle_pi.json

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navigation_tasks/grids/scene_03m_041__turtlebot3_waffle_pi.npz

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navigation_tasks/grids/scene_03m_042__clearpath_jackal.json

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navigation_tasks/grids/scene_03m_042__pal_tiago.json

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navigation_tasks/grids/scene_03m_042__turtlebot3_burger.json

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navigation_tasks/grids/scene_03m_045__turtlebot3_burger.json

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navigation_tasks/grids/scene_03m_045__turtlebot3_burger.npz

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navigation_tasks/grids/scene_03m_045__turtlebot3_waffle_pi.npz

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navigation_tasks/grids/scene_03m_046__clearpath_jackal.json

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navigation_tasks/grids/scene_03m_046__clearpath_jackal.npz

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navigation_tasks/grids/scene_03m_046__pal_tiago.json

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navigation_tasks/grids/scene_03m_046__turtlebot3_burger.npz

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navigation_tasks/grids/scene_03m_049__pal_tiago.npz

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+size 600

navigation_tasks/grids/scene_03m_049__turtlebot3_burger.json

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navigation_tasks/grids/scene_03m_049__turtlebot3_burger.npz

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navigation_tasks/grids/scene_03m_049__turtlebot3_waffle_pi.json

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+}