lib frontier.rb v0.0.1

lib frontier.rb v0.0.1

Initital point release for the lib frontier.rb allowing to compute cartesian distances between two stars and operate a dijskstra pathfinding on a universe graph.

Changes:

• Docs: add changelog #2
• Ci: enable github actions #1
• Examples: add distance script
• Examples: add progress tracking
• Docs: clarify limitations
• Graph: fix edge case for missing vertices
• Gem: add usage example
• Graph: use dijkstra's algorithm for path finding
• Coords: add class to handle 3d coordinates in space
• Frontier: add version 0.0.1
• Coords: Fix coords spec
• Star: add struct for handling star systems
• Coords: add class to handle 3d coordinates in space
• Initial commit for the Frontier library