Added and Moved Heuristic_Search.cpp File

[Heet-Patel-5304]

Description:

• Added Heuristic_Search.cpp: Introduced a new file that implements key heuristic search algorithms like A* and Best-First Search. It contains core logic, classes, and functions required for heuristic-based problem solving.

• Moved Heuristic_Search.cpp: The file was relocated from Algorithms/Heuristic_Search.cpp to a more relevant directory, Artificial Intelligence/Informed Search/A Star/Heuristic_Search.cpp, improving the organization of search-related modules. This helps maintain a cleaner project structure by grouping similar functionalities together.

Fixes #339

Type of change:

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Change in documentation