Added A* Algo in Python

[lck6055]

brief: Implement A* Pathfinding Algorithm

Adds a complete A* pathfinding algorithm implementation for a 2D grid using the Manhattan distance heuristic.

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Complexity

• Time: O(E) in the worst case (E = number of edges).
• Space: O(V) (V = number of vertices/nodes).

[github-actions]

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[github-actions]

🤖 Automated PR Status

🔍 Code Validation

✅ Passed - File naming and structure look good!

🧪 Compilation Tests

✅ Passed - All code compiles successfully!

📋 Overall Status

🎉 Ready for Review - Your PR has passed all automated checks!
👥 Maintainers have been notified for review.

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[Karanjot786]

ok