autonomous navigation targets

[Sneha-Narayan]

Description

This PR does the following:

• identifies good target coordinates of different difficulties to test autonomous navigation algorithms.

Fixes #{{ github issue }}

Testing Steps (if relevant)

set the target position of the algorithm to the coordinates listed in the file

ros2 topic pub /nav/waypoint geometry_msgs/msg/PoseStamped "{header: {frame_id: 'map'}, pose: {position: {x: [enter x], y: [enter y], z: [enter z]}, orientation: {x: 0.0, y: 0.0, z: 0.0, w: 1.0}}}" --once

1. Do this thing
2. Do that thing
3. Make the thing do the thing