Issue

This resolves #2943

Summary

• The creation of the point matrix for the A* algorithm has been improved.
• The distance between the points now corresponds to the specified resolution.
• I added additional test cases to check different resolutions.

Example

• Here is a visualization of the point matrix and shortest path for the start point, end point and obstacle from @turf/shortest-path produces inconsistent results for the same resolution in different units #2943 with {resolution: 20, units: 'meters'}: visualisation.json

Checklist

• Meaningful title, including the name of the package being modified.
• Summary of the changes.
• Heads up if this is a breaking change.
• Any issues this resolves.
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