Incorporate Elevation Data (.las file) into Costmap

[vedantgrover]

Description:
Integrate elevation data from the Mars Desert Research Station (MDRS) site into the costmap for improved terrain awareness.

Tasks:

• Download and store fargate_utah_mdrs.las in the repository.

• Load and parse the .las file using:

  - libLAS (C++) or laspy (Python)
  

• Visualize elevation data (optional: cloud.usbim.com).

• Divide site into grid regions.

• Assign elevation-based costs to each region (e.g., higher slope = higher cost).

• Integrate this elevation cost layer with the global costmap.

Deliverable:
Global costmap enriched with elevation-based terrain costs.